Other near-disasters, negligence and accidents contributed to the chaos in the crisis. Several anti-Castro groups working under a CIA program (codenamed Mongoose) led by Robert Kennedy followed their sabotage activities because no one had thought of interrupting their mission, which could be confused with the preparations for the attack. Cuba immediately became a desert and there were only a few structures left in Moscow and Washington, D.C. Both the Americans and the Soviets were disenchanted by the Cuban missile crisis. The following year, a hotline communication link between Washington and Moscow was set up to defuse similar situations, and the superpowers signed two nuclear weapons treaties. But the Cold War was far from over and the nuclear arms race was far from over. Indeed, another legacy of the crisis was to convince the Soviets to increase their investments in an arsenal of intercontinental missiles capable of reaching the United States from Soviet territory. This idea put the president online. Whether he likes it or not – and Kennedy hated it – Stevenson`s idea (and ball) made much more sense to him than the war whoops of the Joint Chiefs and the ExComm majority. Psychology is complicated, but despite the president`s personal dislike for Stevenson-den-Mann, Stevenson`s intellect had spoken clearly, directly and convincingly to Kennedy`s intellect. This «conversation» planted the seed for a diplomatic solution that Kennedy would cultivate and reap in the next 12 days like his own. This is why, in 1962, Soviet nuclear capabilities placed less emphasis on the ICBM than on medium- and medium-range ballistic missiles (MRBM and IRBM).
The missiles could hit U.S. allies and most of Alaska from Soviet territory, but not from the neighboring United States. Graham Allison, director of Harvard University`s Belfer Center for Science and International Affairs, points out that «the Soviet Union has failed to correct the nuclear imbalance by deploying new ICBMs on its own soil. To deal with the threat she faced in 1962, 1963 and 1964, she had very few opportunities. The transfer of existing nuclear weapons to places where they could achieve U.S. objectives was one of them.  The two superpowers rushed into one of their biggest Cold War confrontations, after the pilot of a U-2 U-2 spy plane piloted by Major Richard Heyser, who flew over Cuba on October 14, 1962, photographed a Medium-range Soviet missile mounted for installation. As the meeting progressed, a new plan emerged, and Kennedy began to be convinced. The new plan invited him to ignore the last message and return to Khrushchev`s old message. Kennedy initially hesitated and felt that Khrushchev would no longer accept the agreement because another had been offered, but Llewellyn Thompson argued that this was still possible.  Special Counsel and White House Counsel Ted Sorensen and Robert Kennedy left the meeting and returned 45 minutes later with a draft letter. The president made some changes, had them typed and sent them.
In 1963, there were signs of an absence of tension between the Soviet Union and the United States. In his inaugural address at American University, President Kennedy urged Americans to revisit the stereotypes and myths of the Cold War and called for a peace strategy that would secure the world for diversity. Two actions also marked a warming of relations between the superpowers: the establishment of a teletype hotline between the Kremlin and the White House and the signing, on 25 July 1963, of the Treaty banning limited nuclear testing. When all offensive missiles and iliozine il-28 were withdrawn from Cuba, the blockade officially ended on November 20, 1962.