The tension in Europe between the United States and Soviet Union following World war II was escalated with Cuba's involvement because
A.) Castro's relationship with Khrushchev appeared to be a threat to America's safety.
B.) Kennedy attempted to create alliances with Cuba in order to overthrow the Soviet Union.
C.) Kennedy ordered an invasion of the Soviet Union off the northern coast of Russia.
D.) Castro supported Khrushchev's efforts to secretly invade the United States off the Gulf Coast.