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Another deterrence position is that nuclear proliferation can be desirable. In this case, it is argued that, unlike conventional weapons, nuclear weapons deter all-out war between states, and they succeeded in doing this during the Cold War between the U.S. and the Soviet Union. In the late 1950s and early 1960s, Gen. Pierre Marie Gallois of France, an adviser to Charles de Gaulle, argued in books like "The Balance of Terror: Strategy for the Nuclear Age" (1961) that mere possession of a nuclear arsenal was enough to ensure deterrence, and thus concluded that the spread of nuclear weapons could increase international stability. Some prominent neo-realist scholars, such as Kenneth Waltz and John Mearsheimer, have argued, along the lines of Gallois, that some forms of nuclear proliferation would decrease the likelihood of total war, especially in troubled regions of the world where there exists a single nuclear-weapon state. Aside from the public opinion that opposes proliferation in any form, there are two schools of thought on the matter: those, like Mearsheimer, who favored selective proliferation, and Waltz, who was somewhat more non-interventionist. Interest in proliferation and the stability-instability paradox that it generates continues to this day, with ongoing debate about indigenous Japanese and South Korean nuclear deterrent against North Korea.
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The threat of potentially suicidal terrorists possessing nuclear weapons (a form of nuclear terrorism) complicates the decision process. The prospect of mutually assured destruction might not deter an enemy who expects to die in the confrontation. Further, if the initial act is from a stateless terrorist instead of a sovereign nation, there might not be a nation or specific target to retaliate against. It has been argued, especially after the September 11, 2001, attacks, that this complication calls for a new nuclear strategy, one that is distinct from that which gave relative stability during the Cold War. Since 1996, the United States has had a policy of allowing the targeting of its nuclear weapons at terrorists armed with weapons of mass destruction.
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Robert Gallucci argues that although traditional deterrence is not an effective approach toward terrorist groups bent on causing a nuclear catastrophe, Gallucci believes that "the United States should instead consider a policy of expanded deterrence, which focuses not solely on the would-be nuclear terrorists but on those states that may deliberately transfer or inadvertently leak nuclear weapons and materials to them. By threatening retaliation against those states, the United States may be able to deter that which it cannot physically prevent.".
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Graham Allison makes a similar case, arguing that the key to expanded deterrence is coming up with ways of tracing nuclear material to the country that forged the fissile material. "After a nuclear bomb detonates, nuclear forensics cops would collect debris samples and send them to a laboratory for radiological analysis. By identifying unique attributes of the fissile material, including its impurities and contaminants, one could trace the path back to its origin." The process is analogous to identifying a criminal by fingerprints. "The goal would be twofold: first, to deter leaders of nuclear states from selling weapons to terrorists by holding them accountable for any use of their weapons; second, to give leaders every incentive to tightly secure their nuclear weapons and materials."
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According to the Pentagon's June 2019 "Doctrine for Joint Nuclear Operations" of the Joint Chiefs of Staffs website Publication, "Integration of nuclear weapons employment with conventional and special operations forces is essential to the success of any mission or operation."
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Because they are weapons of mass destruction, the proliferation and possible use of nuclear weapons are important issues in international relations and diplomacy. In most countries, the use of nuclear force can only be authorized by the head of government or head of state. Despite controls and regulations governing nuclear weapons, there is an inherent danger of "accidents, mistakes, false alarms, blackmail, theft, and sabotage".
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In the late 1940s, lack of mutual trust prevented the United States and the Soviet Union from making progress on arms control agreements. The Russell–Einstein Manifesto was issued in London on July 9, 1955, by Bertrand Russell in the midst of the Cold War. It highlighted the dangers posed by nuclear weapons and called for world leaders to seek peaceful resolutions to international conflict. The signatories included eleven pre-eminent intellectuals and scientists, including Albert Einstein, who signed it just days before his death on April 18, 1955. A few days after the release, philanthropist Cyrus S. Eaton offered to sponsor a conference—called for in the manifesto—in Pugwash, Nova Scotia, Eaton's birthplace. This conference was to be the first of the Pugwash Conferences on Science and World Affairs, held in July 1957.
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By the 1960s, steps were taken to limit both the proliferation of nuclear weapons to other countries and the environmental effects of nuclear testing. The Partial Nuclear Test Ban Treaty (1963) restricted all nuclear testing to underground nuclear testing, to prevent contamination from nuclear fallout, whereas the Treaty on the Non-Proliferation of Nuclear Weapons (1968) attempted to place restrictions on the types of activities signatories could participate in, with the goal of allowing the transference of non-military nuclear technology to member countries without fear of proliferation.
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In 1957, the International Atomic Energy Agency (IAEA) was established under the mandate of the United Nations to encourage development of peaceful applications of nuclear technology, provide international safeguards against its misuse, and facilitate the application of safety measures in its use. In 1996, many nations signed the Comprehensive Nuclear-Test-Ban Treaty, which prohibits all testing of nuclear weapons. A testing ban imposes a significant hindrance to nuclear arms development by any complying country. The Treaty requires the ratification by 44 specific states before it can go into force; , the ratification of eight of these states is still required.
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Additional treaties and agreements have governed nuclear weapons stockpiles between the countries with the two largest stockpiles, the United States and the Soviet Union, and later between the United States and Russia. These include treaties such as SALT II (never ratified), START I (expired), INF, START II (never in effect), SORT, and New START, as well as non-binding agreements such as SALT I and the Presidential Nuclear Initiatives of 1991. Even when they did not enter into force, these agreements helped limit and later reduce the numbers and types of nuclear weapons between the United States and the Soviet Union/Russia.
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Nuclear weapons have also been opposed by agreements between countries. Many nations have been declared Nuclear-Weapon-Free Zones, areas where nuclear weapons production and deployment are prohibited, through the use of treaties. The Treaty of Tlatelolco (1967) prohibited any production or deployment of nuclear weapons in Latin America and the Caribbean, and the Treaty of Pelindaba (1964) prohibits nuclear weapons in many African countries. As recently as 2006 a Central Asian Nuclear Weapon Free Zone was established among the former Soviet republics of Central Asia prohibiting nuclear weapons.
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In 1996, the International Court of Justice, the highest court of the United Nations, issued an Advisory Opinion concerned with the "Legality of the Threat or Use of Nuclear Weapons". The court ruled that the use or threat of use of nuclear weapons would violate various articles of international law, including the Geneva Conventions, the Hague Conventions, the UN Charter, and the Universal Declaration of Human Rights. Given the unique, destructive characteristics of nuclear weapons, the International Committee of the Red Cross calls on States to ensure that these weapons are never used, irrespective of whether they consider them lawful or not.
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Additionally, there have been other, specific actions meant to discourage countries from developing nuclear arms. In the wake of the tests by India and Pakistan in 1998, economic sanctions were (temporarily) levied against both countries, though neither were signatories with the Nuclear Non-Proliferation Treaty. One of the stated "casus belli" for the initiation of the 2003 Iraq War was an accusation by the United States that Iraq was actively pursuing nuclear arms (though this was soon discovered not to be the case as the program had been discontinued). In 1981, Israel had bombed a nuclear reactor being constructed in Osirak, Iraq, in what it called an attempt to halt Iraq's previous nuclear arms ambitions; in 2007, Israel bombed another reactor being constructed in Syria.
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In 2013, Mark Diesendorf said that governments of France, India, North Korea, Pakistan, UK, and South Africa have used nuclear power and/or research reactors to assist nuclear weapons development or to contribute to their supplies of nuclear explosives from military reactors.
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The two tied-for-lowest points for the Doomsday Clock have been in 1953, when the Clock was set to two minutes until midnight after the U.S. and the Soviet Union began testing hydrogen bombs, and in 2018, following the failure of world leaders to address tensions relating to nuclear weapons and climate change issues.
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Nuclear disarmament refers to both the act of reducing or eliminating nuclear weapons and to the end state of a nuclear-free world, in which nuclear weapons are eliminated.
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Beginning with the 1963 Partial Test Ban Treaty and continuing through the 1996 Comprehensive Nuclear-Test-Ban Treaty, there have been many treaties to limit or reduce nuclear weapons testing and stockpiles. The 1968 Nuclear Non-Proliferation Treaty has as one of its explicit conditions that all signatories must "pursue negotiations in good faith" towards the long-term goal of "complete disarmament". The nuclear-weapon states have largely treated that aspect of the agreement as "decorative" and without force.
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Only one country—South Africa—has ever fully renounced nuclear weapons they had independently developed. The former Soviet republics of Belarus, Kazakhstan, and Ukraine returned Soviet nuclear arms stationed in their countries to Russia after the collapse of the USSR.
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Proponents of nuclear disarmament say that it would lessen the probability of nuclear war, especially accidentally. Critics of nuclear disarmament say that it would undermine the present nuclear peace and deterrence and would lead to increased global instability. Various American elder statesmen, who were in office during the Cold War period, have been advocating the elimination of nuclear weapons. These officials include Henry Kissinger, George Shultz, Sam Nunn, and William Perry. In January 2010, Lawrence M. Krauss stated that "no issue carries more importance to the long-term health and security of humanity than the effort to reduce, and perhaps one day, rid the world of nuclear weapons".
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In January 1986, Soviet leader Mikhail Gorbachev publicly proposed a three-stage program for abolishing the world's nuclear weapons by the end of the 20th century. In the years after the end of the Cold War, there have been numerous campaigns to urge the abolition of nuclear weapons, such as that organized by the Global Zero movement, and the goal of a "world without nuclear weapons" was advocated by United States President Barack Obama in an April 2009 speech in Prague. A CNN poll from April 2010 indicated that the American public was nearly evenly split on the issue.
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Some analysts have argued that nuclear weapons have made the world relatively safer, with peace through deterrence and through the stability–instability paradox, including in south Asia. Kenneth Waltz has argued that nuclear weapons have helped keep an uneasy peace, and further nuclear weapon proliferation might even help avoid the large scale conventional wars that were so common before their invention at the end of World War II. But former Secretary Henry Kissinger says there is a new danger, which cannot be addressed by deterrence: "The classical notion of deterrence was that there was some consequences before which aggressors and evildoers would recoil. In a world of suicide bombers, that calculation doesn’t operate in any comparable way". George Shultz has said, "If you think of the people who are doing suicide attacks, and people like that get a nuclear weapon, they are almost by definition not deterrable".
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As of early 2019, more than 90% of world's 13,865 nuclear weapons were owned by Russia and the United States.
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The UN Office for Disarmament Affairs (UNODA) is a department of the United Nations Secretariat established in January 1998 as part of the United Nations Secretary-General Kofi Annan's plan to reform the UN as presented in his report to the General Assembly in July 1997.
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Its goal is to promote nuclear disarmament and non-proliferation and the strengthening of the disarmament regimes in respect to other weapons of mass destruction, chemical and biological weapons. It also promotes disarmament efforts in the area of conventional weapons, especially land mines and small arms, which are often the weapons of choice in contemporary conflicts.
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Even before the first nuclear weapons had been developed, scientists involved with the Manhattan Project were divided over the use of the weapon. The role of the two atomic bombings of the country in Japan's surrender and the U.S.'s ethical justification for them has been the subject of scholarly and popular debate for decades. The question of whether nations should have nuclear weapons, or test them, has been continually and nearly universally controversial.
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Over 500 atmospheric nuclear weapons tests were conducted at various sites around the world from 1945 to 1980. Radioactive fallout from nuclear weapons testing was first drawn to public attention in 1954 when the Castle Bravo hydrogen bomb test at the Pacific Proving Grounds contaminated the crew and catch of the Japanese fishing boat "Lucky Dragon". One of the fishermen died in Japan seven months later, and the fear of contaminated tuna led to a temporary boycotting of the popular staple in Japan. The incident caused widespread concern around the world, especially regarding the effects of nuclear fallout and atmospheric nuclear testing, and "provided a decisive impetus for the emergence of the anti-nuclear weapons movement in many countries".
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As public awareness and concern mounted over the possible health hazards associated with exposure to the nuclear fallout, various studies were done to assess the extent of the hazard. A Centers for Disease Control and Prevention/ National Cancer Institute study claims that fallout from atmospheric nuclear tests would lead to perhaps 11,000 excess deaths among people alive during atmospheric testing in the United States from all forms of cancer, including leukemia, from 1951 to well into the 21st century.
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, the U.S. is the only nation that compensates nuclear test victims. Since the Radiation Exposure Compensation Act of 1990, more than $1.38 billion in compensation has been approved. The money is going to people who took part in the tests, notably at the Nevada Test Site, and to others exposed to the radiation.
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In addition, leakage of byproducts of nuclear weapon production into groundwater has been an ongoing issue, particularly at the Hanford site.
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Some scientists estimate that a nuclear war with 100 Hiroshima-size nuclear explosions on cities could cost the lives of tens of millions of people from long-term climatic effects alone. The climatology hypothesis is that "if" each city firestorms, a great deal of soot could be thrown up into the atmosphere which could blanket the earth, cutting out sunlight for years on end, causing the disruption of food chains, in what is termed a nuclear winter.
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People near the Hiroshima explosion and who managed to survive the explosion subsequently suffered a variety of medical effects:
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Fallout exposure—depending on if further afield individuals shelter in place or evacuate perpendicular to the direction of the wind, and therefore avoid contact with the fallout plume, and stay there for the days and weeks after the nuclear explosion, their exposure to fallout, and therefore their total dose, will vary. With those who do shelter in place, and or evacuate, experiencing a total dose that would be negligible in comparison to someone who just went about their life as normal.
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Staying indoors until after the most hazardous fallout isotope, I-131 decays away to 0.1% of its initial quantity after ten half-lifes—which is represented by 80 days in I-131s case, would make the difference between likely contracting Thyroid cancer or escaping completely from this substance depending on the actions of the individual.
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Nuclear war could yield unprecedented human death tolls and habitat destruction. Detonating large numbers of nuclear weapons would have an immediate, short term and long-term effects on the climate, potentially causing cold weather known as a "nuclear winter". In 1982, Brian Martin estimated that a US–Soviet nuclear exchange might kill 400–450 million directly, mostly in the United States, Europe and Russia, and maybe several hundred million more through follow-up consequences in those same areas. Many scholars have posited that a global thermonuclear war with Cold War-era stockpiles, or even with the current smaller stockpiles, may lead to the extinction of the human race. The "International Physicians for the Prevention of Nuclear War" believe that nuclear war could indirectly contribute to human extinction via secondary effects, including environmental consequences, societal breakdown, and economic collapse. It has been estimated that a relatively small-scale nuclear exchange between India and Pakistan involving 100 Hiroshima yield (15 kilotons) weapons, could cause a nuclear winter and kill more than a billion people.
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According to a peer-reviewed study published in the journal "Nature Food" in August 2022, a full-scale nuclear war between the U.S. and Russia would directly kill 360 million people and more than 5 billion people would die from starvation. More than 2 billion people could die from a smaller-scale nuclear war between India and Pakistan.
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Peace movements emerged in Japan and in 1954 they converged to form a unified "Japan Council against Atomic and Hydrogen Bombs." Japanese opposition to nuclear weapons tests in the Pacific Ocean was widespread, and "an estimated 35 million signatures were collected on petitions calling for bans on nuclear weapons".
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In the United Kingdom, the first Aldermaston March organised by the Campaign for Nuclear Disarmament(CND) took place at Easter 1958, when, according to the CND, several thousand people marched for four days from Trafalgar Square, London, to the Atomic Weapons Research Establishment close to Aldermaston in Berkshire, England, to demonstrate their opposition to nuclear weapons. The Aldermaston marches continued into the late 1960s when tens of thousands of people took part in the four-day marches.
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In 1959, a letter in the "Bulletin of the Atomic Scientists" was the start of a successful campaign to stop the Atomic Energy Commission dumping radioactive waste in the sea 19 kilometres from Boston. In 1962, Linus Pauling won the Nobel Peace Prize for his work to stop the atmospheric testing of nuclear weapons, and the "Ban the Bomb" movement spread.
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In 1963, many countries ratified the Partial Test Ban Treaty prohibiting atmospheric nuclear testing. Radioactive fallout became less of an issue and the anti-nuclear weapons movement went into decline for some years. A resurgence of interest occurred amid European and American fears of nuclear war in the 1980s.
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According to an audit by the Brookings Institution, between 1940 and 1996, the U.S. spent $ in present-day terms on nuclear weapons programs. 57% of which was spent on building nuclear weapons delivery systems. 6.3% of the total, $ in present-day terms, was spent on environmental remediation and nuclear waste management, for example cleaning up the Hanford site, and 7% of the total, $ was spent on making nuclear weapons themselves.
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Peaceful nuclear explosions are nuclear explosions conducted for non-military purposes, such as activities related to economic development including the creation of canals. During the 1960s and 1970s, both the United States and the Soviet Union conducted a number of PNEs. Six of the explosions by the Soviet Union are considered to have been of an applied nature, not just tests.
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The United States and the Soviet Union later halted their programs. Definitions and limits are covered in the Peaceful Nuclear Explosions Treaty of 1976. The stalled Comprehensive Nuclear-Test-Ban Treaty of 1996 would prohibit all nuclear explosions, regardless of whether they are for peaceful purposes or not.
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The FGM-148 Javelin, or Advanced Anti-Tank Weapon System-Medium (AAWS-M), is an American-made portable anti-tank missile system in service since 1996, and continuously upgraded. It replaced the M47 Dragon anti-tank missile in US service. Its fire-and-forget design uses automatic infrared guidance that allows the user to seek cover immediately after launch, in contrast to wire-guided systems, like the system used by the Dragon, which require a user to guide the weapon throughout the engagement. The Javelin's high-explosive anti-tank (HEAT) warhead can defeat modern tanks by top attack, hitting them from above, where their armor is thinnest, and is also useful against fortifications in a direct attack flight.
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Javelin is a fire-and-forget missile with lock-on before launch and automatic self-guidance. The system takes a top attack flight profile against armored vehicles, attacking the usually thinner top armor, but can also make a direct attack, for use against buildings, targets too close for top attack, targets under obstructions, and helicopters.
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It can reach a peak altitude of in top attack mode and in direct attack mode. Initial versions had a range of , later increased to . It is equipped with an imaging infrared seeker. The tandem warhead is fitted with two shaped charges: a precursor warhead to detonate any explosive reactive armor and a primary warhead to penetrate base armor.
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The missile is ejected from the launcher to a safe distance from the operator before the main rocket motors ignite a "soft launch arrangement". This makes it harder to identify the launcher, though backblast from the launch tube still poses a hazard to nearby personnel. The firing team may move as soon as the "fire-and-forget" missile has been launched, or immediately prepare to fire on their next target.
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The missile system is sometimes carried by two soldiers consisting of a gunner and an ammunition bearer, although one soldier can fire it. While the gunner aims and fires the missile, the ammunition bearer scans for prospective targets, watches for threats like enemy vehicles or troops and ensures that personnel and obstacles are clear of the missile's launch backblast.
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In 1983, the United States Army introduced its AAWS-M (Advanced Anti-Tank Weapon System—Medium) requirement and, in 1985, the AAWS-M was approved for development. In August 1986, the proof-of-principle (POP) phase of development began, with a US$30 million contract awarded for technical proof demonstrators: Ford Aerospace (laser-beam riding), Hughes Aircraft Missile System Group (imaging infrared combined with a fiber-optic cable link) and Texas Instruments (imaging infrared). In late 1988, the POP phase ended and, in June 1989, the full-scale development contract was awarded to a joint venture of Texas Instruments and Martin Marietta (now Raytheon and Lockheed Martin). The AAWS-M received the designation of FGM-148.
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In April 1991, the first test-flight of the Javelin succeeded, and in March 1993, the first test-firing from the launcher succeeded. In 1994, low levels of production were authorized, and the first Javelins were deployed with US Army units in 1996.
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Development test and evaluation is conducted to demonstrate the engineering design and development process is complete. It is used to reduce risk, validate, and qualify the design. It also ensures that the product is ready for government acceptance. The DT&E results are evaluated to ensure that design risks have been minimized and the system will meet specifications. Results are also used to estimate the system's military readiness when it is introduced into service. DT&E serves a critical purpose as it reduces the risks of hazards by testing selected high-risk components or subsystems. DT&E is the government developing agency tool used to confirm that the system performs as specified and that the system is ready for field testing.
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DT&E is an iterative process of designing, building, testing, identifying deficiencies, fixing, retesting, and repeating. It is performed in the factory, laboratory, and on the proving ground by the contractors and the government. Contractor and government testing is combined into one integrated test program and conducted to determine if the performance requirements have been met and to provide data to the decision authority.
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The General Accounting Office (GAO), since renamed Government Accountability Office, published a report questioning the adequacy of Javelin testing. The report, titled "Army Acquisition—Javelin Is Not Ready for Multiyear Procurement", opposed entering into full-rate production in 1997 and expressed the need for further operational testing due to the many redesigns undergone.
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In 1995, Secretary of Defense William Perry had set forth five new operational test initiatives. These included: 1) getting operational testers involved early in development; 2) use of modeling and simulation; 3) integrating development and operational testing; 4) combining testing and training; and 5) applying concepts to demos and acquisitions.
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The late-phase development of the Javelin retroactively benefited from the then new operational test initiatives set forth by the Secretary of Defense, as well as a further test conducted as a consequence of the Army's response to the GAO report. Before the Milestone III decision, and before fielding to 3rd Battalion, 75th Ranger Regiment at Fort Benning (also Army Rangers, Special Forces, airborne, air assault, and light infantry), the Javelin was subjected to limited parts of the five operational test and evaluation initiatives, as well as a portability operational test program (an additional test phase of the so-called Product Verification Test), which included live firings with the full-rate configuration weapon.
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Per initiatives and as a DT&E function, the Institute for Defense Analyses (IDA) and the Defense Department's Director of Operational Test and Evaluation (DOT&E) became involved in three development test activities, including: 1) reviewing initial operational test and evaluation plans; 2) monitoring initial operational test and evaluation; and 3) structuring follow-on test and evaluation activities. The results of these efforts detected problems (training included) and corrected significant problems which led to modified test plans, savings in test costs, and GAO satisfaction.
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The Javelin Environmental Test System (JETS) is a mobile test set for Javelin All-Up-Round (AUR) and the Command Launch Unit (CLU). It can be configured to functionally test the AUR or the CLU individually or both units in a mated tactical mode. This mobile unit may be repositioned at the various environmental testing facilities. The mobile system is used for all phases of Javelin qualification testing. There is also a non-mobile JETS used for stand-alone CLU testing. This system is equipped with an environmental chamber and is primarily used for Product Verification Testing (PRVT). Capabilities include: Javelin CLU testing; Javelin AUR testing; Javelin Mated Mode testing; Javelin testing in various environmental conditions; and CLU PRVT.
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The all-up-round test sets include: extreme temperature testing; missile tracker testing (track rate error, tracking sensitivity); seeker/focal plane array testing (cool-down time, dead/defective pixels, seeker identification); pneumatic leakage; continuity measurements; ready time; and guidance sections (guidance commands, fin movement).
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The system consists of three main components: the Command Launch Unit, the Launch Tube Assembly and the missile itself.
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The gunner carries a reusable Command Launch Unit, more commonly referred to as a CLU (pronounced "clue"), which is the targeting component of the two-part system. The CLU has three views which are used to find, target, and fire the missile and may also be used separately from the missile as a portable thermal sight. Infantry are no longer required to stay in constant contact with armored personnel carriers and tanks with thermal sights. This makes infantry personnel more flexible and able to perceive threats they would not otherwise be able to detect. In 2006, a contract was awarded to Toyon Research Corporation to begin development of an upgrade to the CLU enabling the transmission of target image and GPS location data to other units.
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The first view is a 4× magnification day view. It is mainly used to scan areas in visible light during daylight operation. It is also used to scan following sunrise and sunset, when the thermal image is hard to focus due to the natural rapid heating and/or cooling of the Earth.
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The second view is the 4× magnification night view, and shows the gunner a thermal representation of the area viewed. This is also the primary view used due to its ability to detect infrared radiation and find both troops and vehicles otherwise too well hidden to detect. The screen shows a "green scale" view which can be adjusted in both contrast and brightness. The inside of the CLU is cooled by a small refrigeration unit attached to the sight. This greatly increases the sensitivity of the thermal imaging capability since the temperature inside the sight is much lower than that of the objects it detects.
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Due to the sensitivity this causes, the gunner is able to "focus" the CLU to show a detailed image of the area being viewed by showing temperature differences of only a few degrees. The gunner operates this view with the use of two hand stations similar to the control stick found in modern cockpits. It is from this view that the gunner focuses the image and determines the area that gives the best heat signature on which to lock the missile.
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The third field of view is a 12× thermal sight used to better identify the target vehicle. Once the CLU has been focused in WFOV, the gunner may switch to NFOV for target recognition before activating Seeker FOV.
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Once the best target area is chosen, the gunner presses one of the two triggers and is automatically switched to the fourth view; the Seeker FOV, which is a 9x magnification thermal view. This process is similar to the automatic zoom feature on most modern cameras. This view is also available along with the previously mentioned views, all of which may be accessed with the press of a button. However, it is not as popular as a high magnification view takes longer to scan a wide area.
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This view allows the gunner to further aim the missile and set the guidance system housed inside it. It is when in this view that information is passed from the CLU, through the connection electronics of the Launch Tube Assembly, and into the missile's guidance system. If the gunner decides not to fire the missile immediately, they can cycle back to the other views without firing. When the gunner is satisfied with the target picture, they pull the second trigger and establish a "lock". The missile launches after a short delay.
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The US Army developed a new CLU as an improvement over the Block I version. The new CLU is 70 percent smaller, 40 percent lighter, and has a 50 percent battery life increase. Features of the lightweight CLU are: a long-wave infrared (IR) thermographic camera; a high-definition display with improved resolution; integrated handgrips; a five megapixel color camera; a laser point that can be seen visibly or through IR; a far target locator using GPS, a laser rangefinder, a heading sensor, and modernized electronics. The LWCLU has also demonstrated the ability to fire a FIM-92 Stinger anti-aircraft missile, using its superior optics to identify and destroy small unmanned aerial vehicles (UAVs).
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The Javelin Joint Venture received its first low-rate production contract for the LWCLU in June 2022. 200 units will be delivered before full-rate production is expected to initiate in 2023, which will increase the production rate to 600 per year. First delivery is slated for 2025.
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Both the gunner and the ammunition bearer carry the Launch Tube Assembly, a disposable tube that houses the missile and protects the missile from harsh environments. The tube has built-in electronics and a locking hinge system that makes attachment and detachment of the missile to and from the Command Launch Unit a quick and simple process.
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The Javelin missile's tandem warhead is a high-explosive anti-tank (HEAT) type. This round utilizes an explosive shaped charge to create a stream of superplastically deformed metal formed from trumpet-shaped metallic liners. The result is a narrow high velocity particle stream that can penetrate armor.
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The Javelin counters the advent of explosive reactive armor (ERA). ERA boxes or tiles lying over a vehicle's main armor explode when struck by a warhead. This explosion does not harm the vehicle's main armor, but causes steel panels to fly across the path of a HEAT round's narrow particle stream, disrupting its focus and leaving it unable to cut through the main armor. The Javelin uses two shaped-charge warheads in tandem. The weak, smaller diameter HEAT precursor charge detonates the ERA, clearing the way for the much larger diameter HEAT warhead, which then penetrates the target's primary armor.
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To protect the main charge from the explosive blast, shock, and debris caused by the impact of the missile's nose and the detonation of the precursor charge, a blast shield is used between the two charges. This was the first composite material blast shield and the first that had a hole through the middle to provide a jet that is less diffuse.
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A newer main charge liner produces a higher velocity jet. While making the warhead smaller, this change makes it more effective, leaving more room for propellant for the main rocket motor, and thus increasing the missile's range.
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Electronic arming and fusing, called Electronic Safe Arming and Fire (ESAF), is present on the Javelin. The ESAF system enables the firing and arming process to proceed, while imposing a series of safety checks on the missile. ESAF cues the launch motor after the trigger is pulled. When the missile reaches a key acceleration point (indicating that it has cleared the launch tube), the ESAF initiates a second arming signal to fire the flight motor. After another check on missile conditions (target lock check), ESAF initiates final arming to enable the warheads for detonation upon target impact. When the missile strikes the target, ESAF enables the tandem warhead function (provide appropriate time between the detonation of the precursor charge and the detonation of the main charge).
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Though the Javelin's tandem HEAT warhead has proven efficient at destroying tanks, most threats it was employed against in Iraq and Afghanistan were weapon crews and teams, buildings, and lightly armored and unarmored vehicles. To make the Javelin more useful in these scenarios, the Aviation and Missile Research, Development, and Engineering Center developed a multi-purpose warhead (MPWH) for the FGM-148F. While it is still lethal against tanks, the new warhead has a naturally fragmenting steel warhead case that doubles the effectiveness against personnel due to enhanced fragmentation. The MPWH does not add weight or cost and has a lighter composite missile mid-body to enable drop-in replacement to existing Javelin tubes. The Javelin F-model was planned to begin deliveries in early 2020; the improved missile design, along with new lighter CLU with an improved target tracker, entered production in May 2020.
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Most rocket launchers require a large clear area behind the gunner to prevent injury from backblast. To address this shortcoming without increasing recoil to an unacceptable level, the Javelin system uses a soft launch mechanism. A small launch motor using conventional rocket propellant ejects the missile from the launcher, but stops burning before the missile clears the tube. The flight motor is ignited after a delay to allow sufficient clearance from the operator.
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To save weight, the two motors are integrated with a burst disc between them. It is designed to tolerate the pressure of the launch motor from one side, but to easily rupture from the other when the flight motor ignites. The motors use a common nozzle, with the flight motor's exhaust flowing through the expended launch motor. Because the launch motor casing remains in place, an unusual annular (ring-shaped) igniter is used to start it. A normal igniter would be blown out of the back of the missile when the flight motor ignited and could injure the operator.
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Since the launch motor uses a standard NATO propellant, the presence of lead beta-resorcylate as a burn rate modifier causes an amount of lead and lead oxide to be present in the exhaust; gunners are asked to hold their breath after firing for their safety.
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In the event that the launch motor malfunctions and the launch tube is overpressurized—for example, if the rocket gets stuck—the Javelin missile includes a pressure release system to prevent the launcher from exploding. The launch motor is held in place by a set of shear pins, which fracture if the pressure rises too high, and allow the motor to be pushed out of the back of the tube.
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As a fire-and-forget missile, after launch the missile has to be able to track and destroy its target without assistance from the gunner. This is done by coupling an onboard imaging IR system (separate from CLU imaging system) with an onboard tracking system.
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The gunner uses the CLU's IR system to find and identify the target, then switches to the missile's independent IR system to set a track box around the target and establish a lock. The gunner places brackets around the image for locking.
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The seeker stays focused on the target's image, continuing to track it as the target moves or the missile's flight path alters, or attack angles change. The seeker consists of three main components: focal plane array image sensor, cooling and calibration, and stabilization.
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The seeker assembly is encased in a dome that is transparent to long-wave infrared radiation. The IR radiation passes through the dome and then through lenses that focus the energy. The IR energy is reflected by mirrors on to the FPA. The seeker is a two-dimensional staring FPA of 64×64 MerCad (HgCdTe) detector elements. The FPA processes the signals from the detectors and relays a signal to the missile's tracker.
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The staring array is a photo-voltaic device where the incident photons stimulate electrons and are stored, pixel by pixel, in readout integrated circuits attached at the rear of the detector. These electrons are converted to voltages that are multiplexed out of the ROIC on a frame-by-frame basis.
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To function effectively, the FPA must be cooled and calibrated. In other applications, a CLU's IR detectors are cooled using a Dewar flask and a closed-cycle Stirling engine, but there is insufficient space in the missile for a similar solution. Prior to launch, a cooler mounted on the outside of the launch tube activates the electrical systems in the missile and supplies cold gas from a Joule-Thomson expander to the missile detector assembly while the missile is still in the launch tube. When the missile is fired, this external connection is broken and coolant gas is supplied internally by an onboard argon gas bottle. The gas is held in a small bottle at high pressure and contains enough coolant for the duration of the flight of approximately 19 seconds.
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The seeker is calibrated using a chopper wheel. This device is a fan of six blades: five black blades with low IR emissivity and one semi-reflective blade. These blades spin in front of the seeker optics in a synchronized fashion such that the FPA is continually provided with points of reference in addition to viewing the scene. These reference points allow the FPA to reduce noise introduced by response variations in the detector elements.
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The platform on which the seeker is mounted must be stabilized with respect to the motion of the missile body and the seeker must be moved to stay aligned with the target. The stabilization system must cope with rapid acceleration, up/down and lateral movements. This is done by a gimbal system, accelerometers, spinning-mass gyros (or MEMS), and motors to drive changes in position of the platform. The system is basically an autopilot. Information from the gyros is fed to the guidance electronics which drive a torque motor attached to the seeker platform to keep the seeker aligned with the target. The wires that connect the seeker with the rest of the missile are carefully designed to avoid inducing motion or drag on the seeker platform.
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The tracker is key to guidance/control for an eventual hit. The signals from each of the 4,096 detector elements (64×64 pixel array) in the seeker are passed to the FPA readout integrated circuits which reads then creates a video frame that is sent to the tracker system for processing. By comparing the individual frames, the tracker determines the need to correct so as to keep the missile on target. The tracker must be able to determine which portion of the image represents the target.
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The target is initially defined by the gunner, who places a configurable frame around it. The tracker then uses algorithms to compare that region of the frame based on image, geometric, and movement data to the new image frames being sent from the seeker, similar to pattern recognition algorithms. At the end of each frame, the reference is updated. The tracker is able to keep track of the target even though the seeker's point of view can change radically in the course of flight.
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The missile is equipped with four movable tail fins and eight fixed wings at mid-body. To guide the missile, the tracker locates the target in the current frame and compares this position with the aim point. If this position is off center, the tracker computes a correction and passes it to the guidance system, which makes the appropriate adjustments to the four movable tail fins. This is an autopilot. To guide the missile, the system has sensors that check that the fins are positioned as requested. If not, the deviation is sent back to the controller for further adjustment. This is a closed-loop controller.
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There are three stages in the flight managed by the tracker: 1) an initial phase just after launch; 2) a mid-flight phase that lasts for most of the flight; and 3) a terminal phase in which the tracker selects the most effective point of impact. With guidance algorithms, the autopilot uses data from the seeker and tracker to determine when to transition the missile from one phase of flight to another. Depending on whether the missile is in top attack or direct attack mode, the profile of the flight can change significantly. The top attack mode requires the missile to climb sharply after launch and cruise at high altitude then dive on the top of the target (curveball). In direct attack mode (fastball), the missile cruises at a lower altitude directly at the target. The exact flight path which takes into account the range to the target is calculated by the guidance unit.
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A great familiarity of each control and swift operation needs to be achieved before the unit can be deployed efficiently. American troops are trained on the system at the Infantry School in Fort Benning, Georgia, for two weeks. The soldiers are taught basic care and maintenance, operation and abilities, assembly and disassembly, and the positions it can be fired from. Soldiers are also taught to distinguish between a variety of vehicle types even when only a rough outline is visible.
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The soldiers must accomplish several timed drills with set standards before being qualified to operate the system in both training and wartime situations. There are also smaller training programs set up on most army bases that instruct soldiers on the proper use of the system. At these courses, the training program might be changed in small ways. This is most commonly only minor requirements left out due to budget, the number of soldiers vs. simulation equipment, and available time and resources. Both types of training courses have required proficiency levels that must be met before the soldier can operate the system in training exercises or wartime missions.
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The Javelin was used by the US Army, the US Marine Corps and the Australian Special Forces in the 2003 invasion of Iraq on Iraqi Type 69 and Lion of Babylon tanks. During the Battle of Debecka Pass, a platoon of US special forces soldiers equipped with Javelins destroyed two T-55 tanks, eight armored personnel carriers, and four troop trucks.
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During the War in Afghanistan, the Javelin was used effectively in counter-insurgency (COIN) operations. Initially, soldiers perceived the weapon as unsuitable for COIN due to its destructive power, but trained gunners were able to make precision shots against enemy positions with little collateral damage. The Javelin filled a niche in US weapons systems against DShK heavy machine guns and B-10 recoilless rifles—weapons like the AT4 and the M203 grenade launcher were powerful enough, but the ~300m range was insufficient. Conversely, while medium and heavy machine guns and automatic grenade launchers had the range, they lacked the power; and heavy mortars, which had both a good range and more than enough power, were not accurate enough.
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The Javelin had enough range, power, and accuracy for dismounted infantry to counter standoff engagement tactics employed by enemy weapons. With good locks, the missile is most effective against vehicles, caves, fortified positions, and individual personnel. If enemy forces were inside a cave, a Javelin fired into the mouth of the cave would destroy it from the inside, which was not possible from the outside using heavy mortars. The psychological effect of the sound of a Javelin firing sometimes caused insurgents to disengage and flee their position. Even when not firing, the Javelin's CLU was commonly used as a man-portable surveillance system.
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During the al-Shaddadi offensive of the Syrian Civil War in February 2016, a Javelin was used to blow up an attacking suicide car bomb.
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In 2016, claims were posted on social media that the Syrian Kurdish People's Protection Units (YPG) may have received Javelin missiles. By June 2018, it was still unconfirmed if the YPG themselves were fielding Javelin missiles, although US special forces units have been seen operating them in support of Syrian Democratic Forces (SDF) advances during the Deir ez-Zor campaign in the Middle Euphrates River Valley.
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In June 2019, forces of the Libyan Government of National Accord captured four Javelins from the forces of the Libyan National Army. These missiles had been provided by the UAE.
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During the 2022 Russian invasion of Ukraine, NATO provided thousands of Javelins to Ukraine, where they proved highly effective. Javelins have been responsible for a part of the hundreds of armored vehicles Ukraine has destroyed, captured or damaged. An image dubbed "Saint Javelin", which shows Mary Magdalene holding a Javelin launcher in the style of an Eastern Orthodox church painting, gained attraction in social media and soon became a symbol of the Ukrainian resistance against the Russian invasion. An unknown number of Javelin launch tube assemblies were captured by the Russian armed forces during the conflict; it is unclear if any of the captured launchers contained live rounds, or were simply tubes discarded after being used. On 18 March, the Pentagon claimed out of 112 Javelins fired by the Ukrainians since the start of the war, 100 missiles had hit their target..Some of these missiles were captured by Russia during this war.
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In a commentary from the Center for Strategic and International Studies (CSIS), concerns were raised over the US stock of Javelin missiles. According to CSIS, the US has used close to one-third of its Javelin missiles; 7,000 have been supplied thus far, with the United States buying Javelins at the rate of about 1,000 a year. The maximum production rate is 6,480 a year, but it would likely take a year or more to reach that level. Orders take 32 months to deliver; the report concluded that it would take about three or four years to replace the missiles that have already been sent to Ukraine. The missile production rate could be increased greatly with a national procurement effort. On May 8, 2022, Lockheed Martin CEO James Taiclet stated that Lockheed will nearly double the production of Javelins to 4,000 a year. Additionally, Ukrainian officials estimated that up to 500 missiles per day were being used in the early days of the war. On August 8, 2022, the US committed to sending an additional 1000 Javelin missiles.
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