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A treaty was signed to create the Soviet Union under the rule of Lenin. Russia, Ukraine, Belarus, and Transcaucasia formally join the Soviet Union.
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The League of Nations admits the Soviet Union to the League as a permanent member.
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The Soviet Union and Germany sign a non-aggression pact. WW2 begins; Soviet troops enter Poland.
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Soviet Union explodes its first atomic device, First Lightning, in Kazakhstan. The Soviet Union recognizes the Communist government in China.
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The Korean War begins; the Cold War continues.
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Soviet Union places missiles in Cuba, 90 miles away from US borders.
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President Jimmy Carter and Leonid Brezhnev sign the SALT-2 agreement, setting limitations and guidelines for nuclear weapons.
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The Berlin Wall falls; Lithuania leaves the communist Soviet Union.
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Mikhail Gorbachev resigns from his job as the Soviet Union president.
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The Russian government takes over the offices of the Soviet Union in Russia.