What ended the period of détente between the United States and the Soviet Union?

1 Answer
Sim W.
May 5, 2017

The invasion of Afghanistan in 1979

Explanation:

Détente reached its climax in 1975 when the Helsinki agreement was signed. The invasion of Afghanistan by the Soviets completely ended the era of appeasement. Ronald Reagan came to power with the firm determination to be ruthless toward the Soviet Union.

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