What steps were taken by the kennedy administration to resist communist world infiltration?

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The Cuban Missile Crisis was about the Soviet Union (Russia) sending nuclear missiles to be stored in Cuba, in order to have them closer to the United States. Kennedy sent military advisers to South Vietnam to train troops to fight Communist powers in North Vietnam. Kennedy also made a speech at the Berlin Wall against the Communist side of the wall. It was a Nuclear Arms Race. At the Bay of Pigs Invasion, he sent a brigade of CIA-trained Cuban exiles to overthrow Castro and his power.