Nuclear weapons are fearsome, but the long-range ballistic missile gives them a stealth and merciless swiftness which is much more terrifying.

Nuclear weapons have given the world the means for self-destruction in hours or days ; ;

* 1953 – Nuclear weapons testing: the Soviet atomic bomb project continues with the detonation of Joe 4, the first Soviet thermonuclear weapon.

Category: Nuclear weapons program of the Soviet Union

Category: Nuclear weapons governance

Category: Nuclear weapons of the United Kingdom

B. Priestley on " Britain and the Nuclear Bombs ", which was critical of Aneurin Bevan for changing his mind about nuclear weapons and ceasing to advocate unilateral nuclear disarmament by Britain.

Organisations that had previously opposed British nuclear weapons supported CND, including the British Peace Committee, the Direct Action Committee, the National Committee for the Abolition of Nuclear Weapons Tests and the Quakers.

* Nuclear weapons and the United Kingdom

Mountbatten expressed his feelings towards the use of nuclear weapons in combat in his article " A Military Commander Surveys The Nuclear Arms Race ", which was published shortly after his death in International Security in the winter of 1979 – 80.

* 1962 – Nuclear weapons testing: The " Small Boy " test shot Little Feller I becomes the last atmospheric test detonation at the Nevada National Security Site.

Category: Nuclear weapons program of the Soviet Union

Category: Nuclear weapons program of the Soviet Union

Nuclear fission produces energy for nuclear power and to drive the explosion of nuclear weapons.

Nuclear fission weapons must use an extremely high quality, highly-enriched fuel exceeding the critical size and geometry ( critical mass ) in order to obtain an explosive chain reaction.

Nuclear weapons are designed to operate under this state.

Nuclear fission weapons require a mass of fissile fuel that is prompt supercritical.

* Nuclear Non-Proliferation Treaty, an international treaty, opened for signature on July 1, 1968 to limit the spread of nuclear weapons

* Nuclear technology, applications of nuclear energy including nuclear power, nuclear medicine, and nuclear weapons

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 completely eliminated.

Critics of nuclear disarmament say that it would undermine deterrence, and if nuclear weapons were completely eliminated, it would destroy the current Nuclear peace the world is experiencing and would make the large Conventional wars, common before the Nuclear age, far more likely.

* Nuclear Non-Proliferation Treaty ( NPT )— signed 1968, came into force 1970: An international treaty ( currently with 189 member states ) to limit the spread of nuclear weapons.

* 1951 – Nuclear testing at the Nevada Test Site begins with a one-kiloton bomb dropped on Frenchman Flat.

* Pictures of victims of U. S. nuclear testing in the Marshall Islands on Nuclear Files. org

* 1954 – Nuclear testing: The Castle Bravo, a 15-megaton hydrogen bomb, is detonated on Bikini Atoll in the Pacific Ocean, resulting in the worst radioactive contamination ever caused by the United States.

* 1953 – Nuclear testing: At the Nevada Test Site, the United States conduct their first and only nuclear artillery test.

* 1998 – Nuclear testing: Pakistan responds to a series of nuclear tests by India with five of its own codenamed Chagai-I, prompting the United States, Japan, and other nations to impose economic sanctions.

* 1961 – Nuclear testing: The Soviet Union detonates the hydrogen bomb Tsar Bomba over Novaya Zemlya ; at 50 megatons of yield, it is still the largest explosive device ever detonated, nuclear or otherwise.

* January 27 – Nuclear testing at the Nevada Test Site begins with a 1-kiloton bomb dropped on Frenchman Flat, northwest of Las Vegas, Nevada.

* July 1 – Nuclear testing: Operation Crossroads, a series of nuclear weapon tests conducted by the United States at Bikini Atoll in Micronesia, is initiated by detonation of Able at an altitude of 520 feet ( 158 m ).

** Nuclear testing: In the first underwater test of the atomic bomb, the surplus USS Saratoga is sunk near Bikini Atoll in the Pacific Ocean, when the United States detonates the Baker device during Operation Crossroads.

* May 28 – Nuclear testing: In response to a series of Indian nuclear tests, Pakistan explodes 5 nuclear devices of its own in the Chaghai hills of Baluchistan, codenamed Chagai-I, prompting the United States, Japan and other nations to impose economic sanctions.

* October 30 – Nuclear testing: The Soviet Union detonates a 58-megaton yield hydrogen bomb known as Tsar Bomba over Novaya Zemlya.

* July 17 – Nuclear testing: The " Small Boy " test shot Little Feller I becomes the last atmospheric test detonation at the Nevada Test Site.

* May 25 – Nuclear testing: At the Nevada Test Site, the United States conducts its only nuclear artillery test: Upshot-Knothole Grable.

Nuclear weapons have been detonated on over two thousand occasions for testing purposes and demonstrations.

NERVA NRX ( Nuclear Rocket Experimental ), started testing in September 1964.

An unrelated water-cooled system known as NF-1 ( for Nuclear Furnace ) was used for future materials testing.

Pewee 2's fuel elements reduced fuel corrosion still further, by a factor of 3 in Nuclear Furnace testing, but Pewee 2 was never tested on the stand.

It was used for testing components and as a training tool for the Nuclear Power Training Unit.

It was built as stage three of the Accelerated Strategic Computing Initiative ( ASCI ) started by the U. S. Department of Energy and the National Nuclear Security Administration to build a simulator to replace live WMD testing following the moratorium on testing started by President George H. W. Bush in 1992 and extended by Bill Clinton in 1993.

Nuclear testing at the Nevada Test Site began with a bomb dropped on Frenchman Flat on 27 January 1951.

Research and promotion of civil uses of radioactive materials, such as for nuclear non-destructive testing, nuclear medicine, and nuclear power, was split into the Office of Nuclear Energy, Science & Technology within ERDA by the same act.