Nuclear latency or a nuclear threshold state is the condition of a country possessing all the technology, expertise and infrastructure needed to quickly develop nuclear weapons, without having actually yet done so. [1] Japan is considered a "paranuclear" state, with complete technical prowess to develop a nuclear weapon quickly, [2] [3] and is sometimes called being "one screwdriver's turn" from the bomb, as it is considered to have the materials and technical capacity to make a nuclear weapon at will. [4] [5] [6] [7] [8] [9]
Alongside Japan, Iran is also considered a nuclear threshold state, [10] [11] [12] [13] and has been described being "a hop, skip, and a jump away" from developing nuclear weapons, [14] [15] [16] with its advanced nuclear program capable of producing fissile material for a bomb in a matter of days if weaponized. [17] [18] [19] Other notable nuclear threshold states are Canada, Germany, the Netherlands, Brazil [20] and Australia. [21] [22]
Nuclear latency can be achieved with solely peaceful intentions, but in some cases nuclear latency is achieved in order to be able to create nuclear arms in the future, which is known as "nuclear hedging". [23] While states engaging in nuclear hedging do not directly violate the NPT, they do run the risk of potentially encouraging their neighboring states, particularly those they have had conflicts with, to do the same, spawning a "virtual" arms race to ensure the potential of future nuclear capability. [23] Such a situation could rapidly escalate into an actual arms race, drastically raising tensions in the region and increasing the risk of a potential nuclear exchange. [23]
In a paper written following the establishment of the JCPOA, a Counselor of the Nuclear Threat Initiative, John Carlson, outlined several criteria for use in helping to determine whether a state's nuclear program was run solely with peaceful intentions, or if the state was engaging in nuclear hedging: [23]
South Africa has successfully developed its own nuclear weapons, but dismantled them in 1989. Taiwan and South Korea have both been identified as "insecure" nuclear threshold states—states with the technical capability to develop nuclear weapons. South Korea had been involved in nuclear energy technology since the end of the Korean War, and possessed an active nuclear weapons program that was terminated in the mid-1970s with its signing of the Nuclear Non-Proliferation Treaty, while still engaging in some clandestine nuclear weapons research into the late 1980s, and the security motivations to seriously contemplate such an option—since the publishing of a Mitre Corporation report in 1977. [24] [25] [26] US intelligence also believes Taiwan has designed devices suitable for nuclear testing. [27]
The number of states that are technically nuclear-latent has steadily increased as nuclear energy and its requisite technologies have become more available, but the number of states that are actually at the threshold status are limited. [28] [29] Nuclear latency does not presume any particular intentions on the part of a state recognized as being nuclear-latent. [29]
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion reactions, producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter.
The Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT, is an international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy, and to further the goal of achieving nuclear disarmament and general and complete disarmament. Between 1965 and 1968, the treaty was negotiated by the Eighteen Nation Committee on Disarmament, a United Nations-sponsored organization based in Geneva, Switzerland.
Nuclear proliferation is the spread of nuclear weapons, fissionable material, and weapons-applicable nuclear technology and information to nations not recognized as "Nuclear Weapon States" by the Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT. Proliferation has been opposed by many nations with and without nuclear weapons, as governments fear that more countries with nuclear weapons will increase the possibility of nuclear warfare, de-stabilize international or regional relations, or infringe upon the national sovereignty of nation states.
Nuclear disarmament is the act of reducing or eliminating nuclear weapons. Its end state can also be a nuclear-weapons-free world, in which nuclear weapons are completely eliminated. The term denuclearization is also used to describe the process leading to complete nuclear disarmament.
Nuclear warfare, also known as atomic warfare, is a military conflict or prepared political strategy that deploys nuclear weaponry. Nuclear weapons are weapons of mass destruction; in contrast to conventional warfare, nuclear warfare can produce destruction in a much shorter time and can have a long-lasting radiological result. A major nuclear exchange would likely have long-term effects, primarily from the fallout released, and could also lead to secondary effects, such as "nuclear winter", nuclear famine, and societal collapse. A global thermonuclear war with Cold War-era stockpiles, or even with the current smaller stockpiles, may lead to various scenarios including the human extinction.
North Korea has a military nuclear weapons program and, as of 2024, is estimated to have an arsenal of approximately 50 nuclear weapons and sufficient production of fissile material for six to seven nuclear weapons per year. North Korea has also stockpiled a significant quantity of chemical and biological weapons. In 2003, North Korea withdrew from the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). Since 2006, the country has conducted six nuclear tests at increasing levels of expertise, prompting the imposition of sanctions.
The People's Republic of China has developed and possesses weapons of mass destruction, including chemical and nuclear weapons. The first of China's nuclear weapons tests took place in 1964, and its first hydrogen bomb test occurred in 1966 at Lop Nur. Tests continued until 1996, when the country signed the Comprehensive Nuclear-Test-Ban Treaty (CTBT), but did not ratify it. China acceded to the Biological Weapons Convention (BWC) in 1984 and ratified the Chemical Weapons Convention (CWC) in 1997.
Israel is believed to possess weapons of mass destruction, and to be one of four nuclear-armed countries not recognized as a Nuclear Weapons State by the Non-Proliferation Treaty (NPT). The US Congress Office of Technology Assessment has recorded Israel as a country generally reported as having undeclared chemical warfare capabilities, and an offensive biological warfare program. Officially, Israel neither confirms nor denies possessing nuclear weapons.
Taiwan pursued a number of weapons of mass destruction programs from 1949 to the late 1980s. The final secret nuclear weapons program was shut down in the late 1980s under US pressure after completing all stages of weapons development besides final assembly and testing. Taiwan lacked an effective delivery mechanism and would have needed to further miniaturize any weapon for effective use in combat. Currently, there is no evidence of Taiwan possessing any chemical, biological, or nuclear weapons. However, nuclear weapons from the United States were deployed to Taiwan during a period of heightened regional tensions with China beginning with the First Taiwan Strait Crisis and ending in the 1970s.
Pakistan is one of nine states that possess nuclear weapons. Pakistan began developing nuclear weapons in January 1972 under Prime Minister Zulfikar Ali Bhutto, who delegated the program to the Chairman of the Pakistan Atomic Energy Commission (PAEC) Munir Ahmad Khan with a commitment to having the device ready by the end of 1976. Since PAEC, which consisted of over twenty laboratories and projects under reactor physicist Munir Ahmad Khan, was falling behind schedule and having considerable difficulty producing fissile material, Abdul Qadeer Khan, a metallurgist working on centrifuge enrichment for Urenco, joined the program at the behest of the Bhutto administration by the end of 1974. Producing fissile material was pivotal to the Kahuta Project's success and thus to Pakistan obtaining the capability to detonate a nuclear weapon by the end of 1984.
During World War II, Japan had several programs exploring the use of nuclear fission for military technology, including nuclear reactors and nuclear weapons. Like the similar wartime programs in Nazi Germany, it was relatively small, suffered from an array of problems brought on by lack of resources and wartime disarray, and was ultimately unable to progress beyond the laboratory stage during the war.
South Korea has the raw materials and equipment to produce a nuclear weapon. However, it has not opted to make one. South Korea has continued on a stated policy of non-proliferation of nuclear weapons since 2004 and has adopted a policy to maintain a nuclear-free Korean Peninsula. South Korea also allows the United States to maintain nuclear weapons on its territories, which the US first brought to the peninsula in January 1958. North Korea has and is developing additional nuclear weapons.
Iran is not known to currently possess weapons of mass destruction (WMD) and has signed treaties repudiating the possession of WMD including the Biological Weapons Convention, the Chemical Weapons Convention, and the Non-Proliferation Treaty (NPT). Iran has first-hand knowledge of WMD effects—over 100,000 Iranian troops and civilians were victims of chemical weapons during the 1980s Iran–Iraq War.
The nuclear weapons debate refers to the controversies surrounding the threat, use and stockpiling of nuclear weapons. Even before the first nuclear weapons had been developed, scientists involved with the Manhattan Project were divided over the use of the weapon. The only time nuclear weapons have been used in warfare was during the final stages of World War II when USAAF B-29 Superfortress bombers dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki in early August 1945. The role of the bombings in Japan's surrender and the U.S.'s ethical justification for them have been the subject of scholarly and popular debate for decades.
The Proliferation Security Initiative (PSI) is a global effort that aims to stop trafficking of weapons of mass destruction (WMD), their delivery systems, and related materials to and from states and non-state actors of proliferation concern. Launched by United States President, George W. Bush in May 2003 at a meeting in Kraków, Poland, the PSI has now grown to include the endorsement of 105 nations around the world, including Russia, Canada, the United Kingdom, Australia, France, Germany, Italy, Argentina, Japan, the Netherlands, Poland, Singapore, New Zealand, Republic of Korea and Norway.
The United States was the first country to manufacture nuclear weapons and is the only country to have used them in combat, with the bombings of Hiroshima and Nagasaki in World War II. Before and during the Cold War, it conducted 1,054 nuclear tests, and tested many long-range nuclear weapons delivery systems.
The Institute for Science and International Security (ISIS) is a nonprofit, non-governmental institution to inform the public about "science and policy issues affecting international security". Founded in 1993, the group is led by founder and former United Nations IAEA nuclear inspector David Albright, and has been described as specializing "in analyzing the findings" of the IAEA. ISIS was founded on a belief that scientists have an obligation to participate actively in solving major problems of national and international security. ISIS focuses primarily on four parts: 1) prevent the spread of nuclear weapons and related technology to other nations and terrorists, 2) lead to greater transparency of nuclear activities worldwide, 3) reinforce the international non-proliferation regime, and 4) cut down nuclear arsenals. Furthermore, ISIS seeks to build stable foundations for various efforts to reduce the threat posed by nuclear weapons to U.S. and international security by integrating technical, scientific and policy research. As the effectiveness of ISIS was recognized in the Global “Go-To Think Tanks” rankings, ISIS consistently places in the top 25 Science and Technology Think Tanks in the world and in 2015 placed as one of the top United States and foreign policy think tanks in the world.
This article deals with activities of the U.S. Central Intelligence Agency, specifically dealing with arms control, weapons of mass destruction (WMD) and weapons proliferation. It attempts to look at the process of tasking and analyzing, rather than the problem itself, other than whether the CIA's efforts match its legal mandate or assists in treaty compliance. In some cases, the details of a country's programs are introduced because they present a problem in analysis. For example, if Country X's policymakers truly believe in certain history that may not actually be factual, an analyst trying to understand Country X's policymakers needs to be able to understand their approach to an issue.
Views on the nuclear program of Iran vary greatly, as the nuclear program of Iran is a very contentious geopolitical issue. Uriel Abulof identifies five possible rationales behind Iran’s nuclear policy: (i) Economy, mainly energy needs; (ii) Identity politics, pride and prestige; (iii) Deterrence of foreign intervention; (iv) Compellence to boost regional influence; and (v) Domestic politics, mitigating, through 'nuclear diversion' the regime’s domestic crisis of legitimacy. Below are considerations of the Iranian nuclear program from various perspectives.
For more on the proliferation and debates surrounding nuclear weapons and their latency, visit the Woodrow Wilson Center's Nuclear Proliferation International History Project website: http://wilsoncenter.org/program/nuclear-proliferation-international-history-project.