8. John F. Kennedy
Shortly after his inauguration, Kennedy permitted a band of Cuban exiles, already armed and trained, to invade their homeland. The attempt to overthrow the regime of Fidel Castro was a failure. Soon thereafter, the Soviet Union renewed its campaign against West Berlin. Kennedy replied by reinforcing the Berlin garrison and increasing the Nation’s military strength, including new efforts in outer space. Confronted by this reaction, Moscow, after the erection of the Berlin Wall, relaxed its pressure in central Europe.