Final answer:
The key U.S. foreign policy strategy during the Cold War was brinkmanship, involving a show of force to deter the Soviet Union and prevent the spread of Communism.
Explanation:
Brinkmanship was a key Cold War policy under Eisenhower's administration, emphasizing the willingness to go to the brink of war to deter the Soviet Union. The three major elements of U.S. foreign policy during the Cold War included the strategy of using a superior show of force to bluff the enemy into backing down, the belief that the spread of Communism needed to be prevented to avoid a chain reaction in the region, and the main goal of preventing Communism from spreading.
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