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 he had made to Kennedy might lead to a breakdown of the agreement between the Soviet Union and the US. To prevent that, Khrushchev decided to offer to give Cuba more than 100 tactical nuclear weapons that had been shipped to Cuba along with the long-range missiles but, crucially, had escaped the notice of US intelligence. Khrushchev determined that because the Americans had not listed the missiles on their list of demands, keeping them in Cuba would be in the Soviet Union's interests. Anastas Mikoyan was tasked with the negotiations with Castro over the missile transfer deal that was designed