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 bases in Italy and Turkey was not made public at the time, Khrushchev appeared to have lost the conflict and become weakened. The perception was that Kennedy had won the contest between the superpowers and that Khrushchev had been humiliated. Both Kennedy and Khrushchev took every step to avoid full conflict despite pressures from their respective governments. Khrushchev held power for another two years. By the time of the crisis in October 1962, total nuclear weapons in each country's stockpile numbered approximately 26,400 for the United States and 3,300 for the Soviet Union. At the peak of the crisis, the