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Lenin and Revoutionaries Return to Russia.
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War with Poland
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United States recongnises Soviet Union.
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Soviet Union and Japan sign a Non-aggression pact.
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Soviet Union Shoot Down Spy Plane.
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Cuban Missle Crisis.
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Soviets and Chinese Clash.
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Brezhnev Dies
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Chernobyl Nuclear Power Station Explodes
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Russian Government takes over USSR Offices.