The US tested the TX-17 thermonuclear bomb for the first time in Bikini Atoll of the Marshall Islands.
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The United States and Russia signed the Moscow Treaty, agreeing to limit their nuclear arsenals.
The US started plans to construct its first nuclear battlefield weapon.
A nuclear bomb was lost off the coast of Georgia, US.
The world's first atomic bomb was detonated.
French President Jacques Chirac announced France's nuclear test program had finished.
