United States had no nuclear weapons "in Japan." In 1959, Prime Minister Nobusuke Kishi stated that Japan would neither develop nuclear weapons nor permit...

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...

on the Non-Proliferation of Nuclear Weapons (NPT). In order of acquisition of nuclear weapons, these are the United States, Russia (the successor of the...

Nuclear proliferation is the spread of nuclear weapons, fissionable material, and weapons-applicable nuclear technology and information to nations not...

War II, Japan had several programs exploring the use of nuclear fission for military technology, including nuclear reactors and nuclear weapons. Like the...

nuclear weapon. The United States has the second-largest number of nuclear weapons in the world, after the Russian Federation. Nuclear weapons have been...

United Kingdom began the world's first nuclear weapons research project, codenamed Tube Alloys, in 1941, during World War II. The United States, in collaboration...

In 1952, the United Kingdom became the third country (after the United States and the Soviet Union) to develop and test nuclear weapons, and is one of...

Nuclear weapons tests are experiments carried out to determine the performance, yield, and effects of nuclear weapons. Testing nuclear weapons offers practical...

of Nuclear Weapons (TPNW), or the Nuclear Weapon Ban Treaty, is the first legally binding international agreement to comprehensively prohibit nuclear weapons...

fission weapons. Pure fission weapons have been the first type to be built by new nuclear powers. Large industrial states with well-developed nuclear arsenals...

three nuclear powers in NATO (France, the United Kingdom and the United States), only the United States is known to have provided weapons for nuclear sharing...

nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy, and to further the goal of achieving nuclear disarmament...

Nuclear weapons testing is the act of experimentally and deliberately firing one or more nuclear devices in a controlled manner pursuant to a military...

of nuclear weapons. The availability of intelligence on recent advancements in nuclear weapons of several major countries (such as United States and...

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...

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...

see PACER Peaceful nuclear explosions Two nuclear weapons have been deployed in combat—both by the United States against Japan in World War II. The first...

Biological Weapons Convention (BWC) in 1984 and ratified the Chemical Weapons Convention (CWC) in 1997. The number of nuclear warheads in China's arsenal...

developing their own nuclear weapons but abandoned the idea. NATO involved others of the five official nuclear weapons states. The United Kingdom and Canada...

chemical weapons, and the Japanese conducted a serious, though futile, nuclear weapon program. Since World War II, the United States military based nuclear and...

France is one of the five "Nuclear Weapons States" under the Treaty on the Non-Proliferation of Nuclear Weapons, but is not known to possess or develop...

This is a list of nuclear weapons listed according to country of origin, and then by type within the states. American nuclear weapons of all types – bombs...

Underground nuclear testing is the test detonation of nuclear weapons that is performed underground. When the device being tested is buried at sufficient...

consequences of any use of nuclear weapons and for its ground-breaking efforts to achieve a treaty-based prohibition of such weapons." ICAN aims to reframe...

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...

Petitioning actions towards the Japanese government, the United Nations and other governments Elimination and removal of nuclear weapons, establishment of an international...

nations without nuclear weapons have said that the present situation whereby Nuclear Weapon States monopolise the right to possess nuclear weapons is "highly...

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...

types of weapons of mass destruction: nuclear weapons, biological weapons, and chemical weapons. It is one of the five nuclear-weapon states recognized...