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 island. US officials attempted to use a Corona photoreconnaissance satellite to obtain coverage over reported Soviet military deployments, but imagery acquired over western Cuba by a Corona KH-4 mission on October 1 was heavily covered by clouds and haze and failed to provide any usable intelligence. At the end of September, Navy reconnaissance aircraft photographed the Soviet ship "Kasimov", with large crates on its deck the size and shape of Il-28 jet bomber fuselages. In September 1962, analysts from the Defense Intelligence Agency (DIA) noticed that Cuban surface-to-air missile sites were arranged in a pattern similar to those used by