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 S-75 Dvina (NATO designation "SA-2") surface-to-air missile sites at eight different locations. CIA director John A. McCone was suspicious. Sending antiaircraft missiles into Cuba, he reasoned, "made sense only if Moscow intended to use them to shield a base for ballistic missiles aimed at the United States." On August 10, he wrote a memo to Kennedy in which he guessed that the Soviets were preparing to introduce ballistic missiles into Cuba. With important Congressional elections scheduled for November, the crisis became enmeshed in American politics. On August 31, Senator Kenneth Keating (R-New York), who received his information from Cuban exiles