Cuban Missile Crisis the blockade from 6:45 pm EST on November 20, 1962. At the time when the Kennedy administration thought that the Cuban Missile Crisis was resolved, nuclear tactical rockets stayed in Cuba since they were not part of the Kennedy-Khrushchev understandings and the Americans did not know about them. The Soviets changed their minds, fearing possible future Cuban militant steps, and on November 22, 1962, Deputy Premier of the Soviet Union Anastas Mikoyan told Castro that the rockets with the nuclear warheads were being removed as well. In his negotiations with the Soviet Ambassador Anatoly Dobrynin, Robert Kennedy informally proposed that
Cuban Missile Crisis wrote, "too young, intellectual, not prepared well for decision making in crisis situations... too intelligent and too weak." US covert operations against Cuba continued in 1961 with the unsuccessful Operation Mongoose. In addition, Khrushchev's impression of Kennedy's weaknesses was confirmed by the President's response during the Berlin Crisis of 1961, particularly to the building of the Berlin Wall. Speaking to Soviet officials in the aftermath of the crisis, Khrushchev asserted, "I know for certain that Kennedy doesn't have a strong background, nor, generally speaking, does he have the courage to stand up to a serious challenge." He also told his