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Failed attempt by the Empire of Japan to develop nuclear technology
Empire of Japan had several programs exploring the use of nuclear fission for military technology, including nuclear reactors and nuclear weapons. Like the
Japanese nuclear weapons programs
Japanese_nuclear_weapons_programs
Aspect of Japan's military history
Japan extensively used and researched chemical and biological weapons (CBW) during the Second Sino-Japanese War as part of Japanese war crimes. Japan
Japan and weapons of mass destruction
Japan_and_weapons_of_mass_destruction
to possess nuclear weapons. Estimates of Israel's stockpile range from 90 to 400 warheads, and the country is believed to possess a nuclear triad of delivery
Nuclear_weapons_of_Israel
Japan's non-nuclear weapons policy is a policy popularly articulated as the Three Non-Nuclear Principles of non-possession, non-production, and non-introduction
Japan's non-nuclear weapons policy
Japan's_non-nuclear_weapons_policy
respect to nuclear weapons development. The two programs diverged for multiple reasons. Although AB Atomenergi was part of the nuclear weapons program, its
Swedish nuclear weapons program
Swedish_nuclear_weapons_program
The Italian nuclear weapons program was an effort by Italy to develop nuclear weapons in the late 1960s and early 1970s. Italian scientists such as Enrico
Italian nuclear weapons program
Italian_nuclear_weapons_program
States holds the second-largest arsenal of nuclear weapons (after the Russian Federation) among the nine nuclear-armed countries. Under the Manhattan Project
Nuclear weapons of the United States
Nuclear_weapons_of_the_United_States
most recent to openly test nuclear weapons. North Korea is also believed to have one of the world's largest chemical weapons stockpiles. North Korea is
North Korea and weapons of mass destruction
North_Korea_and_weapons_of_mass_destruction
its nuclear weapons. The country has been a signatory of the Biological Weapons Convention since 1975, the Treaty on the Non-Proliferation of Nuclear Weapons
South Africa and weapons of mass destruction
South_Africa_and_weapons_of_mass_destruction
possess nuclear weapons. Pakistan is not party to the Nuclear Non-Proliferation Treaty. Pakistan's arsenal is estimated at 170 nuclear weapons as of 2025
Pakistan and weapons of mass destruction
Pakistan_and_weapons_of_mass_destruction
weapons, conducting its first test in 1964 and its first thermonuclear test in 1966. One of the five nuclear-weapon states recognized by the Nuclear Non-Proliferation
Nuclear_weapons_of_China
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
Taiwan and weapons of mass destruction
Taiwan_and_weapons_of_mass_destruction
has possessed nuclear weapons since 1964. It was the last to develop them of the five nuclear-weapon states recognized by the Nuclear Non-Proliferation
China and weapons of mass destruction
China_and_weapons_of_mass_destruction
Topics referred to by the same term
Japan nuclear may refer to: 2011 Japanese nuclear accidents Japanese nuclear incidents Nuclear power in Japan Japanese nuclear weapon program Japan's
Japan_nuclear
Research project in Nazi Germany
Germany undertook several research programs relating to nuclear technology, including nuclear weapons and nuclear reactors, before and during World War
German nuclear program during World War II
German_nuclear_program_during_World_War_II
Spread of nuclear weapons
Nuclear proliferation is the spread of nuclear weapons to additional countries, particularly those not recognized as nuclear-weapon states by the Treaty
Nuclear_proliferation
Allies, targeted at facilities of the German nuclear weapons program and Japanese nuclear weapons program, themselves generally limited to laboratories
Military attacks on nuclear facilities
Military_attacks_on_nuclear_facilities
Part of the post-WWII era and the Cold War
countries developed nuclear weapons during the Cold War. The UK and France, both NATO members, developed fission and fusion weapons throughout the 1950s
Nuclear_arms_race
Soviet biological and chemical weapons programs, and is suspected to have continued them. It is one of the five nuclear-weapon states recognized under the
Russia and weapons of mass destruction
Russia_and_weapons_of_mass_destruction
possess nuclear weapons, though only eight formally acknowledge possessing them. In order of first successful nuclear test, the world's nine nuclear-armed
List of states with nuclear weapons
List_of_states_with_nuclear_weapons
Act of eliminating nuclear weapons
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
Nuclear_disarmament
develop nuclear weapons. As of 2026[update], India is estimated to possess 190 nuclear weapons. India previously developed chemical weapons, and is a
India and weapons of mass destruction
India_and_weapons_of_mass_destruction
Type of international nuclear weapons policy
countries joined NATO. The Japanese nuclear weapon program was conducted during World War II. Like the German nuclear weapons program, it suffered from an array
Nuclear_umbrella
Legally binding international agreement to prohibit nuclear weapons
The Treaty on the Prohibition of Nuclear Weapons (TPNW), or the Nuclear Weapon Ban Treaty, is the first legally binding international agreement to
Treaty on the Prohibition of Nuclear Weapons
Treaty_on_the_Prohibition_of_Nuclear_Weapons
made during the 1930s, the United Kingdom began the world's first nuclear weapons research project, codenamed Tube Alloys, in 1941, during World War
History_of_nuclear_weapons
State ability to develop nuclear weapons
develop nuclear weapons, without having actually yet done so. Nuclear latency can be achieved with solely peaceful intentions, but in some cases nuclear latency
Nuclear_latency
Explosion from fission or fusion reaction
and a pure fusion weapon remains a hypothetical device. Nuclear explosions are used in nuclear weapons and nuclear testing. Nuclear explosions are extremely
Nuclear_explosion
test nuclear weapons. The UK is one of nine nuclear-armed states, and one of five recognized by the Treaty on the Non-Proliferation of Nuclear Weapons. As
Nuclear weapons of the United Kingdom
Nuclear_weapons_of_the_United_Kingdom
1955. It was one of the five nuclear-weapon states of the Non-Proliferation Treaty, and its biological weapons program proceeded despite its ratification
Soviet Union and weapons of mass destruction
Soviet_Union_and_weapons_of_mass_destruction
terminate its programs of nuclear, chemical, ballistic missiles, and other efforts that could lead to internationally proscribed weapons of mass destruction
Libya and weapons of mass destruction
Libya_and_weapons_of_mass_destruction
Unconventional weapons of Japanese doomsday cult
as a weapon not attributed to a state program. Aum Shinrikyo member Kiyohide Hayakawa expressed interest in acquiring or purchasing nuclear weapons from
Aum Shinrikyo and weapons of mass destruction
Aum_Shinrikyo_and_weapons_of_mass_destruction
governments allowed nuclear weapons to remain in Japan until 1972, to move through Japanese territory, and for the return of the weapons in time of emergency
United States nuclear weapons in Japan
United_States_nuclear_weapons_in_Japan
History of technical design of modern hydrogen bombs
weapons, also known as hydrogen bombs. The design relies on the radiation implosion principle, using thermal X-rays released from a fission nuclear primary
History of the Teller–Ulam design
History_of_the_Teller–Ulam_design
1945 attacks in Japan during WWII
only uses of nuclear weapons in an armed conflict. In the final year of World War II, the Allies prepared for a costly invasion of the Japanese mainland.
Atomic bombings of Hiroshima and Nagasaki
Atomic_bombings_of_Hiroshima_and_Nagasaki
Controlled detonation of nuclear weapons for scientific or political purposes
Nuclear weapons tests are experiments carried out to determine the performance of nuclear weapons and the effects of their explosion. Over 2,000 nuclear
Nuclear_weapons_testing
Treaty, Biological Weapons Convention, Chemical Weapons Convention, and Comprehensive Nuclear-Test-Ban Treaty. The nuclear program of Iran has been one
Iran and weapons of mass destruction
Iran_and_weapons_of_mass_destruction
chemical weapons and infrastructure; Iraq ceased its chemical, biological and nuclear programs. During the Iran–Iraq War, known Iraqi chemical weapons attacks
Iraq and weapons of mass destruction
Iraq_and_weapons_of_mass_destruction
nuclear program, Kazakhstan was also a prominent site of Soviet programs of biological (only Biopreparat outside of Russia) and chemical weapons. The former
Kazakhstan and weapons of mass destruction
Kazakhstan_and_weapons_of_mass_destruction
International treaty
nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy, and to further the goal of achieving nuclear disarmament
Treaty on the Non-Proliferation of Nuclear Weapons
Treaty_on_the_Non-Proliferation_of_Nuclear_Weapons
Iranian policy statement by Ali Khamenei
Khamenei, then supreme leader of Iran, against the development of nuclear weapons dates back to the mid-1990s. The first public announcement is reported
Fatwa_against_nuclear_weapons
Since their first use in warfare in August 1945, nuclear weapons and their potential effects have been a recurring motif in popular culture, to the extent
Nuclear weapons in popular culture
Nuclear_weapons_in_popular_culture
Parliamentary resolutions that have guided the Japanese no-nuclear policy
island to Japanese control. The U.S. military was thought to keep nuclear weapons on the island, though it did not confirm or deny such weapons, and Satō
Three_Non-Nuclear_Principles
Energy released in nuclear weapons explosions
amount of weapon yield compared to the mass of the weapon. The practical maximum yield-to-weight ratio for fusion weapons (thermonuclear weapons) has been
Nuclear_weapon_yield
weapons. France remains the only NATO member to not participate in its Nuclear Planning Group. France was the fourth country to test a nuclear weapon
France and weapons of mass destruction
France_and_weapons_of_mass_destruction
various nuclear weapons and their delivery systems in South Korea between 1958 and 1991. South Korea actively pursued a nuclear weapons program from 1970
South Korea and weapons of mass destruction
South_Korea_and_weapons_of_mass_destruction
Nuclear weapons design means the physical, chemical, and engineering arrangements that cause the physics package of a nuclear weapon to detonate. There
Nuclear_weapon_design
Aspect of nuclear deterrence strategy
Nuclear sharing is a concept in deterrence theory in which a nuclear-armed country deploys nuclear weapons on the territory of a country that does not
Nuclear_sharing
The nuclear weapons of the United States comprise the second-largest arsenal in the world, behind Russia. The US is only country to have used nuclear weapons
United States and weapons of mass destruction
United_States_and_weapons_of_mass_destruction
High-speed missiles and projectiles
hypersonic glide vehicles (boost-glide weapons), and hypersonic cruise missiles (airbreathing weapons). Below Mach 1, weapons would be characterized as subsonic
Hypersonic_weapon
Spanish nuclear weapons program (1963–1987)
weapons kept their weapons and grew their supplies, the program was designed to prevent other countries from developing similar weapons. The program also
Project_Islero
1943–1973 military research program
biological weapons programs. Thus, as late as 1942 the U.S. had no biological weapons capabilities. Initial interest in biological weapons by the Chemical
United States biological weapons program
United_States_biological_weapons_program
Treaty-defined zone in which nuclear weapons are prohibited
development, manufacturing, control, possession, testing, or stationing of nuclear weapons in a given area, that has mechanisms of verification and control to
Nuclear-weapon-free_zone
Energy in Japan Environmental issues in Japan Nuclear Regulation Authority Japan's non-nuclear weapons policy Japanese nuclear weapon program United States-Japan
Nuclear_power_in_Japan
Films discussing the dangers, utilization, and existence of nuclear power and weapons
Dark Circle The Day After Trinity Deadly Deception: General Electric, Nuclear Weapons and Our Environment Duck and Cover Heavy Water: A Film for Chernobyl
List of films about nuclear issues
List_of_films_about_nuclear_issues
the military dictatorship, Brazil had a secret program intended to develop nuclear weapons. The program was dismantled in 1990, five years after the military
Brazil and weapons of mass destruction
Brazil_and_weapons_of_mass_destruction
Nuclear weapons program (1980s to 1983)
Under a military dictatorship, Argentina began a nuclear weapons program in the early 1980s, but this was abolished in 1983 after the return to civilian
Argentina and weapons of mass destruction
Argentina_and_weapons_of_mass_destruction
Accidental loading of warheads onto an aircraft
Nuclear Weapons". Spiegel, "U.S. Nuclear Focus Has Dimmed, Studies Find", Defense Science Board, "Report on Unauthorized Movement of Nuclear Weapons"
2007 United States Air Force nuclear weapons incident
2007_United_States_Air_Force_nuclear_weapons_incident
East that is believed to possess nuclear weapons. Israel is also suspected to possess chemical and biological weapons. Israel is the only UN member not
Israel and weapons of mass destruction
Israel_and_weapons_of_mass_destruction
peaceful nuclear program and according to some observations, the program can hypothetically be weaponized towards developing nuclear weapons. In 2018
Saudi Arabia and weapons of mass destruction
Saudi_Arabia_and_weapons_of_mass_destruction
United States has stationed nuclear weapons in Turkey since 1959. As of 2023[update], an estimated 20 to 30 B61 nuclear bombs were stored at Incirlik
Turkey and weapons of mass destruction
Turkey_and_weapons_of_mass_destruction
own weapons of mass destruction. Canada participated in NATO’s nuclear mission between 1963 and 1984, which included the hosting of US nuclear weapons on
Canada and weapons of mass destruction
Canada_and_weapons_of_mass_destruction
initiated a nuclear weapons program. If such a program does exist, Myanmar's technical and financial limitations may make it difficult for the program to succeed
Myanmar and weapons of mass destruction
Myanmar_and_weapons_of_mass_destruction
This timeline of nuclear weapons development is a chronological catalog of the evolution of nuclear weapons rooting from the development of the science
Timeline of nuclear weapons development
Timeline_of_nuclear_weapons_development
Nuclear weapons testing is the act of experimentally and deliberately firing one or more nuclear devices in a controlled manner pursuant to a military
List_of_nuclear_weapons_tests
Regulations for uses of radioactive materials
power generators Control and safe management of nuclear weapons, nuclear material capable of use as a weapon, and other radioactive materials Safe handling
Nuclear_safety_and_security
Military conflict that deploys nuclear weaponry
Nuclear warfare, also known as atomic warfare, is a military conflict or prepared political strategy that deploys nuclear weaponry. Nuclear weapons are
Nuclear_warfare
1991, once hosted Soviet nuclear weapons and delivery systems on its territory. The former Soviet Union had its nuclear program expanded to only four of
Ukraine and weapons of mass destruction
Ukraine_and_weapons_of_mass_destruction
Sweden had programs for both nuclear and chemical weapons. During the first decades of the Cold War, a nuclear weapons program was active. No weapon was ever
Sweden and weapons of mass destruction
Sweden_and_weapons_of_mass_destruction
Development and deployment of Bacillus anthracis (anthrax) as a biological weapon
biological weapon. As a biological weapon, anthrax has been used in biowarfare and bioterrorism since 1914. However, in 1975, the Biological Weapons Convention
Anthrax_weaponization
Hypothetical climatic effect of nuclear war
Columbia wildfires. Studies suggest that a full-scale nuclear war, expending thousands of weapons in the largest arsenals in Russia and the United States
Nuclear_winter
The United States has stationed nuclear weapons in Germany since 1955, currently numbering 10 to 15 tactical nuclear gravity bombs. Germany is not believed
Germany and weapons of mass destruction
Germany_and_weapons_of_mass_destruction
Poland is not known or believed to possess weapons of mass destruction. During the Cold War, Soviet nuclear warheads were stockpiled in Poland and designated
Poland and weapons of mass destruction
Poland_and_weapons_of_mass_destruction
Chronology of the North Korean nuclear program
more difficult to create. Several countries with long-standing nuclear weapons programs, such as India and Pakistan, are suspected of striving towards
Timeline of the North Korean nuclear program
Timeline_of_the_North_Korean_nuclear_program
and allegedly used chemical weapons, and pursued the production of nuclear weapons. The covert Syrian chemical weapons program began in the 1970s with assistance
Syria and weapons of mass destruction
Syria_and_weapons_of_mass_destruction
Type of explosive arms
nine nuclear states have developed some form of medium- to long-range delivery system for their nuclear weapons. Alongside improvement of weapons, their
Nuclear_weapons_delivery
Smallest amount of fissile material needed to sustain a nuclear reaction
Indeed, sophisticated nuclear weapons programs can make a functional device from less material than more primitive weapons programs require. Aside from
Critical_mass
Controversies surrounding nuclear attacks
atomic bombings, Japan maintains a strong social taboo against making jokes about nuclear weapons. In a 2015 survey, 79% of Japanese said the bombings
Debate over the atomic bombings of Hiroshima and Nagasaki
Debate_over_the_atomic_bombings_of_Hiroshima_and_Nagasaki
of Nuclear Weapons. U.S. Department of Defense. doi:10.2172/6852629. ISBN 978-0-318-20369-0. OSTI 6852629.[page needed] "The Soviet Weapons Program – The
Effects_of_nuclear_explosions
International agreement on the nuclear program of Iran
Iran agreed to constrain its nuclear program by limiting fuel cycle activities that could lead to the production of weapons-grade uranium or plutonium.
Iran_nuclear_deal
Soviet pathogen weaponization from 1920s to 1990s
New York City, and complemented Soviet strategic nuclear weapons. It remains unclear if the program operationalized delivery vehicles such ballistic or
Soviet biological weapons program
Soviet_biological_weapons_program
Diplomatic crisis over nuclear weapons
States removed all of its nuclear weapons that were based abroad including the last 100 or so of their tactical nuclear weapons from South Korea. Although
1994 North Korean nuclear crisis
1994_North_Korean_nuclear_crisis
1949 Soviet nuclear bomb test
romanized: Pyérvaya mólniya, IPA: [ˈpʲervəjə ˈmolnʲɪjə]), was the first nuclear weapons test that was conducted by the Soviet Union. It was detonated on 29 August
RDS-1
the program had three departments: one worked on nuclear weapons, one on medium-range missiles, and a third on chemical and biological weapons. The defection
Romania and weapons of mass destruction
Romania_and_weapons_of_mass_destruction
2025 American military action
Iran's nuclear program, and while Israel has continually accused Iran of pursuing nuclear weapons, Israel itself is widely believed to possess nuclear weapons
2025 United States strikes on Iranian nuclear sites
2025_United_States_strikes_on_Iranian_nuclear_sites
nuclear program recounts the path that led France to develop a military nuclear program after World War II. The establishment of the French Nuclear Deterrence
History of France's military nuclear program
History_of_France's_military_nuclear_program
develop, actually built, or bought weapons of mass destruction, including biological, chemical, and nuclear weapons. Legend: C (Confirmed) S (Sharing)
List of weapons of mass destruction by country
List_of_weapons_of_mass_destruction_by_country
its nuclear power sector continue. Moreover, North Korea has developed nuclear weapons. It conducted what are widely accepted to have been nuclear tests
Nuclear_power_in_North_Korea
2024 book by Annie Jacobsen
by North Korea's arsenal: the regime possesses 50 nuclear weapons plus 5,000 tons of chemical weapons. While THAAD missile defense systems protect South
Nuclear_War:_A_Scenario
World's atomic warhead designs, 1945–present
are known to possess a nuclear triad, being capable to deliver nuclear weapons by land, sea and air. American nuclear weapons of all types – bombs, warheads
List_of_nuclear_weapons
Weapons used in space warfare
Space weapons are weapons used in space warfare. They include weapons that can attack space systems in orbit (for example, anti-satellite weapons), attack
Space_weapon
since denied developing a military nuclear program, having signed the treaty of non-proliferation of nuclear weapons in 1995. However, some sources such
Algeria and weapons of mass destruction
Algeria_and_weapons_of_mass_destruction
Arabia maintains a nuclear weapons program. From an official and public standpoint, Saudi Arabia has been an opponent of nuclear weapons in the Middle East
Nuclear program of Saudi Arabia
Nuclear_program_of_Saudi_Arabia
Terrorism involving nuclear material or weapons
organizations using nuclear weapons has been identified by nuclear powers and considered since the conception of nuclear weapons and the rise of global
Nuclear_terrorism
Mexico has no nuclear weapons, but it possesses the technical capability to manufacture nuclear weapons. However, it has renounced them and has pledged
Mexico and weapons of mass destruction
Mexico_and_weapons_of_mass_destruction
Legal prohibition on nuclear energy or weapons within New Zealand
government to declare that it would not acquire or use nuclear weapons and to withdraw from nuclear alliances such as ANZUS. In 1963, the Auckland CND campaign
New_Zealand_nuclear-free_zone
First Chinese nuclear test, 1964
Chic-1 by the US intelligence agencies) was the first nuclear test of the nuclear weapons program of China, detonated on 16 October 1964, at the Lop Nur
Project_596
started studying the possibility of building nuclear weapons, and continued its military nuclear program for 43 years until 1988. However, it ratified
Switzerland and weapons of mass destruction
Switzerland_and_weapons_of_mass_destruction
Weapon that can kill many people or cause great damage
first weapon of mass destruction in history. At the time, nuclear weapons had not been developed fully. Japan conducted research on biological weapons, and
Weapon_of_mass_destruction
portal Nuclear power in Japan Greens Japan Horonobe, Hokkaidō Iwaishima Japan's non-nuclear policy Japanese nuclear weapons program Japanese nuclear incidents
Anti–nuclear power movement in Japan
Anti–nuclear_power_movement_in_Japan
U.S. atomic bomb type used at Nagasaki, 1945
as Mark III) was the design of the nuclear weapon the United States used for seven of the first eight nuclear weapons ever detonated in history. It is also
Fat_Man
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JAPANESE NUCLEAR-WEAPONS-PROGRAMS
JAPANESE NUCLEAR-WEAPONS-PROGRAMS
Female
Japanese
(澄å) Japanese name SUMIKO means "clear/pure thinking child."
Male
Japanese
(勇) Japanese name ISAMU means "courage."
Male
Japanese
(è¡) Japanese name SATOSHI means "clear-thinking; quick-witted; wise."
Female
Japanese
(雀) Japanese name SUZUME means "sparrow."
Female
Japanese
(進) Japanese name SUSUMU means "progressing."
Male
Japanese
(努) Japanese name TSUTOMU means "worker."
Female
Japanese
(真ç ) Japanese name SHINJU means "pearl."
Male
Japanese
(æ–°) Japanese name ARATA means "fresh."
Boy/Male
Japanese
Japanese god of labour and luck.
Male
Japanese
(å‹) Japanese name KATSU means "victory."
Female
Japanese
(霞) Japanese name KASUMI means "mist."
Female
Japanese
(鈴) Japanese name SUZU means "bell."
Female
Japanese
(鹿) Japanese name SHIKA means "deer."
Male
Japanese
(å‹) Japanese name MASARU means "victorious."
Male
Japanese
(å …) Japanese name KATASHI means "firmness."
Boy/Male
Japanese
The Japanese god of war.
Female
Japanese
(å’²) Japanese name SAKI means "blossom."
Male
Japanese
(æ·³) Japanese name KIYOSHI means "pure."
Male
Japanese
(å¦) Japanese name MANABU means "learn."
Male
Japanese
(敦) Japanese name ATSUSHI means "industrious."
JAPANESE NUCLEAR-WEAPONS-PROGRAMS
JAPANESE NUCLEAR-WEAPONS-PROGRAMS
JAPANESE NUCLEAR-WEAPONS-PROGRAMS
JAPANESE NUCLEAR-WEAPONS-PROGRAMS
JAPANESE NUCLEAR-WEAPONS-PROGRAMS
JAPANESE NUCLEAR-WEAPONS-PROGRAMS
JAPANESE NUCLEAR-WEAPONS-PROGRAMS
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