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
US signals intelligence in the Cold War when compromised, by Ronald Pelton, in 1981. SIGINT had much operational impact during this period, with the Cuban Missile Crisis, steady ramping up of warfare in Southeast Asia, and US domestic surveillance. Aircraft, UAV, ship, and ground SIGINT all were in use, and satellite technology left the experimental stage. The Ryan Q-2A evolved into the Q-2C Firebee target drone of 1960 which remains in active service. In 1961, the Air Force requested a reconnaissance version of the Firebee then designated the BQM-34A which resulted in the Ryan Model 147 (later to be designated AQM-34 by USAF). This RPV (Remotely Piloted