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The US helped Russia in World War 1 by giving them supplies, but the US did not join the war until 1917.
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The US entered World War 2 after Pearl Harbor and were allies with the Russia.
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The Soviet Union detonated its first atomic bomb.
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After world war 2 the US occupied the southern area of Korea while The Soviet Union occupied the northern region. After North Korean forces entered the southern area, the Us responded, starting the Korean war.
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Joseph Stalin dies in March of 1953.
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The US received intelligence that The Soviet Union was placing medium range ballistic missiles in Cuba. The US then quarantined Cuba.
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The Us sends first troops into Vietnam.
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The Soviet Union invaded Afghanistan in December of 1979, The US responded by the deferral of most cultural and economic exchanges.
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The Soviet Union announced it would not participate in the olympics in Los Angeles becauseof "poor security".
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Presidents Bush and Putin announced a joint initiative to improve the security of nuclear facilities