Cuban Missile Crisis Soviets had more than 550 similar weapons in Europe. The enormity of how close the world came to thermonuclear war impelled Khrushchev to propose a far-reaching easing of tensions with the US. In a letter to President Kennedy dated October 30, 1962, Khrushchev outlined a range of bold initiatives to forestall the possibility of a further nuclear crisis, including proposing a non-aggression treaty between the North Atlantic Treaty Organization (NATO) and the Warsaw Pact or even disbanding these military blocs, a treaty to cease all nuclear weapons testing and even the elimination of all nuclear weapons, resolution of the hot-button
Cuban Missile Crisis on how to resolve the crisis had been made exclusively by Kennedy and Khrushchev. Castro was especially upset that certain issues of interest to Cuba, such as the status of the US Naval Base in Guantánamo, were not addressed. That caused Cuban–Soviet relations to deteriorate for years to come. On the other hand, Cuba continued to be protected from invasion. The worldwide US Forces DEFCON 3 status was returned to DEFCON 4 on November 20, 1962. General Curtis LeMay told the President that the resolution of the crisis was the "greatest defeat in our history"; his was a minority position.