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 that this disturbs you because it is ninety-nine miles by sea from the coast of the United States of America. But... you have placed destructive missile weapons, which you call offensive, in Italy and Turkey, literally next to us... I therefore make this proposal: We are willing to remove from Cuba the means which you regard as offensive... Your representatives will make a declaration to the effect that the United States... will remove its analogous means from Turkey... and after that, persons entrusted by the United Nations Security Council could inspect on the spot the fulfillment of the pledges made."