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South Africa successfully built six nuclear weapons in the 1980s, but dismantled all of them in the early 1990s, shortly before the fall of the apartheid system. [23] So far it is the only nuclear-capable country to give up nuclear weapons, although several members of the Soviet Union did so during the collapse of the Soviet regime. North Korea ...
France had been heavily involved in nuclear research before World War II through the work of the Joliot-Curies. This was discontinued after the war because of the instability of the Fourth Republic and lack of finances. [76] However, in the 1950s, France launched a civil nuclear research program, which produced plutonium as a byproduct.
Most Japanese military units fought fiercely, ensuring that the Allied victory would come at an enormous cost. The 1.25 million battle casualties incurred in total by the United States in World War II included both military personnel killed in action and wounded in action. Nearly one million of the casualties occurred during the last year of ...
After the development of the first nuclear weapons during World War II, though, there was much debate within the political circles and public sphere of the United States about whether or not the country should attempt to maintain a monopoly on nuclear technology, or whether it should undertake a program of information sharing with other nations ...
The United States opened the nuclear era in July 1945 with the test of a 20-kiloton atomic bomb at Alamogordo, New Mexico, in July 1945, and then dropped atomic bombs on the Japanese c
US and USSR/Russian nuclear weapons stockpiles, 1945–2014. The Soviet Union tested its first nuclear weapon ("RDS-1") in 1949. This crash project was developed partially with information obtained via the atomic spies at the United States' Manhattan Project during and after World War II. The Soviet Union was the second nation to have developed ...
The British historian Antony Beevor views the beginning of World War II as the Battles of Khalkhin Gol fought between Japan and the forces of Mongolia and the Soviet Union from May to September 1939. [9] Others view the Spanish Civil War as the start or prelude to World War II. [10] [11] The exact date of the war's end also is not universally ...
1998 – May – India tests five more nuclear weapons as part of Operation Shakti at the Pokhran test site. This was India's second round of nuclear weapons testing. 1998 – May – Pakistan detonates five high-enriched uranium nuclear weapons in the Chagai Hills. A sixth nuclear test, at Kharan, was a plutonium device.