United Nations 1945, 50 governments met in San Francisco for a conference and started drafting the UN Charter, which was adopted on 25 June 1945 in the San Francisco Opera House, and signed on 26 June 1945 in the Herbst Theatre auditorium in the Veterans War Memorial Building. This charter took effect on 24 October 1945, when the UN began operation. The UN's mission to preserve world peace was complicated in its early decades during the Cold War between the United States and Soviet Union and their respective allies. Its missions have consisted primarily of unarmed military observers and lightly armed troops
San Francisco International Airport on a routing of San Francisco – Honolulu – Tokyo. Also in 1961, Lufthansa had begun serving SFO with Boeing 707s operating a routing of San Francisco – Montreal Dorval Airport – Paris Orly Airport – Frankfurt three days a week. Lufthansa then operated Boeing 720B jets on this same routing in 1963 and was also flying Boeing 707 service to Frankfurt via stops in Montreal and London Heathrow Airport the same year. By 1965, Pan American-Grace Airways, known as Panagra, was operating Douglas DC-8 jets on an international routing of San Francisco – Los Angeles – Panama City, Panama