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The Tsar Bomba is the single most physically powerful device ever deployed on Earth, the most powerful nuclear bomb tested and the largest human-made explosion in history. [65] For comparison, the largest weapon ever produced by the US, the now-decommissioned B41 , had a predicted maximum yield of 25 Mt (100 PJ).
A B83 casing. The B83 is a variable-yield thermonuclear gravity bomb developed by the United States in the late 1970s that entered service in 1983. With a maximum yield of 1.2 megatonnes of TNT (5.0 PJ), it has been the most powerful nuclear weapon in the United States nuclear arsenal since October 25, 2011 after retirement of the B53. [1]
Kazakhstan had 1,400 Soviet-era nuclear weapons on its territory and transferred them all to Russia by 1995, after Kazakhstan acceded to the NPT. [135] Ukraine had as many as 3,000 nuclear weapons deployed on its territory when it became independent from the Soviet Union in 1991, equivalent to the third-largest nuclear arsenal in the world.
Russia and the United States are the world's biggest nuclear powers, holding about 88% of the world's nuclear weapons. [7] The Soviet Union ratified the Geneva Protocol—prohibiting the use of biological and chemical weapons in interstate conflicts—on April 5, 1928, with reservations that were later dropped on January 18, 2001. [8]
Tsar Bomba, October 30, 1961: largest nuclear weapon ever detonated, with a design yield of 100 Mt, de-rated to 50 Mt for the test drop. Chagan, January 15, 1965: large cratering experiment as part of Nuclear Explosions for the National Economy program, which created an artificial lake. [citation needed]
The components of a B83 nuclear bomb used by the United States. This is a list of nuclear weapons listed according to country of origin, and then by type within the states. . The United States, Russia, China and India are known to possess a nuclear triad, being capable to deliver nuclear weapons by land, sea and
The United States nuclear program since its inception has experienced accidents of varying forms, ranging from single-casualty research experiments (such as that of Louis Slotin during the Manhattan Project), to the nuclear fallout dispersion of the Castle Bravo shot in 1954, to accidents such as crashes of aircraft carrying nuclear weapons ...
The MOAB is the most powerful conventional bomb ever used in combat as measured by the weight of its explosive material. [29] [30] The explosive yield is comparable to that of the smallest tactical nuclear weapons, such as the Cold War-era American M-388 projectile fired by the portable Davy Crockett recoilless gun.