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United States drop first atomic bomb (Little Boy) on Hiroshima
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Russia joins the war against japan.
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The United States drops second atomic bomb (Fat Man) on nagasaki, Japan.
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Soviets explode first nuclear bomb known as RDS 1, First Lightning, and Joe-1.
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in march 1954 the KGB was established.
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Russia send first Satilight into space codenamed sputnik.
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Cuba taken over by Fidel Castro
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Soviet Union reveals that U.S. spy plane was shot down over Soviet territory
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The cuban missile crisis was a period of time when the soviets sought to implant nuclear missiles into cuba. the U.S. responded by puting up a naval blockade deniing access to cuba from any vessels throught the crisis.
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Nuclear Test Ban Treaty ratified which banned all nuclear testing except for underground testing
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Communist governments fell in Czechoslovakia, Bulgaria, and Rumania thus ending the Soviet empire and all their nuclear dreams.