In 1979, Marxists gained control of the government of Afghanistan. This resulted in a civil war insofar as Afghanistan was populated by many Muslim rebels that rejected Communism.
As the rebels began to make progress against the government, the Marxist government called for the support of the Soviet Union. The Soviet Union invaded Afghanistan on Christmas Eve, 1979.
President Carter saw this invasion as a revival of the Cold War and contemplated his response.
DECISION: You are Jimmy Carter. How do you respond to the Russian invasion of Afghanistan?
Click here to see what action Carter took