Cuban Missile Crisis established a naval blockade on October 22 to prevent further missiles from reaching Cuba; Oval Office tapes during the crisis revealed that Kennedy had also put the blockade in place as an attempt to provoke Soviet-backed forces in Berlin as well. The US announced it would not permit offensive weapons to be delivered to Cuba and demanded that the weapons already in Cuba be dismantled and returned to the Soviet Union. After several days of tense negotiations, an agreement was reached between US President John F. Kennedy and Khrushchev. Publicly, the Soviets would dismantle their offensive weapons in Cuba and
Cuban Missile Crisis guerrilla operations to begin in August and September. "Open revolt and overthrow of the Communist regime" would occur in the first two weeks of October. When Kennedy ran for president in 1960, one of his key election issues was an alleged "missile gap" with the Soviets leading. Actually, the US at that time "led" the Soviets by a wide margin that would only increase. In 1961, the Soviets had only four intercontinental ballistic missiles (R-7 Semyorka). By October 1962, they may have had a few dozen, with some intelligence estimates as high as 75. The US, on the other hand,