Cuban Project by late August, the Soviet military build-up in Cuba disgruntled the Kennedy administration. The fear of open military retaliation against the United States and Berlin for the US covert operations in Cuba slowed down the operation. By October, as the Cuban Missile Crisis heated up, President Kennedy demanded the cessation of Operation Mongoose. Operation Mongoose formally ceased its activities at the end of 1962. The first assassination plots began in the late summer of 1960, according to the Church Committee’s documentation. Some of the plots and ideas ranged from “poisoned pills, an exploding seashell, and a planned gift of a
Cuban Missile Crisis Soviet Premier Nikita Khrushchev was persuaded by the idea of countering the US's growing lead in developing and deploying strategic missiles by placing Soviet intermediate-range nuclear missiles in Cuba, despite the misgivings of the Soviet Ambassador in Havana, Alexandr Ivanovich Alexeyev, who argued that Castro would not accept the deployment of the missiles. Khrushchev faced a strategic situation in which the US was perceived to have a "splendid first strike" capability that put the Soviet Union at a huge disadvantage. In 1962, the Soviets had only 20 ICBMs capable of delivering nuclear warheads to the US from inside the Soviet