President Truman announced to the people of America that they successfully developed a hydrogen bomb.
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France became the fourth nuclear-capable nation following its successful Gerboise Bleue atomic test.
China performed its first thermonuclear test.
The US tested the TX-17 thermonuclear bomb for the first time in Bikini Atoll of the Marshall Islands.
The Truman doctrine is proclaimed.
The US started plans to construct its first nuclear battlefield weapon.
