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It was one of the first major international crises of the Cold War.
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It was the second of the Indochina Wars and was officially fought between North Vietnam and South Vietnam. North Vietnam was supported by the Soviet Union, China,and other communist allies; South Vietnam was supported by the United States, South Korea, the Philippines, Australia, Thailand and other anti-communist allies
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It was a nationwide revolution against the Hungarian People's Republic and its Soviet-imposed policies, lasting from 23 October until 10 November 1956.
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The Berlin Wall was a guarded concrete barrier that physically and ideologically divided Berlin from 1961 to 1989.
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It was confrontation between the United States and the Soviet Union initiated by the American discovery of Soviet ballistic missile deployment in Cuba
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The Soviet Union led Warsaw Pact troops in an invasion of Czechoslovakia to crack down on reformist trends in Prague.
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The Soviet Union, invaded Afghanistan in 1986.