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Period: to
May 8: VE Day - Victory in Europe. Germany surrenders to the Red Army in Berlin
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February 9: Stalin hostile speech - communism & capitalism were incompatible
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March 12 : Truman Doctrine - Truman declares active role in Greek Civil War
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February 25 : Communist takeover in Czechoslovakia
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April 4 : NATO ratified
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Truman approved H-bomb development
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January 12 : Federal Civil Defense Administration established
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A-bombs developed by Britain
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March 17-June 4 Nuclear Arms Race atomic test series of 11 explosions at Nevada Test Site
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March 1: H-bomb Castle-Bravo test
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May : Warsaw Pact formed