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  1939-1945. A bomb set of in japan ended world war 2 but started the cold war
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  meeting of heads for the government feb 4-feb 11 1945
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  he was an american foreign policy who stated purpose was to counter Soviet geopolitical expansion during the Cold War 1947-1948
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  it was an American initiative to help Western Europe.
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  1955-1991. it was a collective defence treaty signed in Warsaw among the Soviet Union and seven Soviet satellite states of Central and Eastern Europe during the Cold War.