Canada in the Cold War United Nations Conference on International Organization in San Francisco in June 1945, it was not adopted at that time. During the Suez Crisis of 1956, the idea promoted by Canada in 1945 of a United Nations military force returned to the fore. The conflict involving Britain, France, Israel and Egypt quickly developed into a potential flashpoint between the emerging 'superpowers' of the United States and the Soviet Union as the Soviets made intimations that they would militarily support Egypt's cause. The Soviets went as far as to say they would be willing to use "all types of modern weapons of
International Civil Aviation Organization convention, held in London in 1912 allocated the first radio callsigns for use by aircraft. ICAN continued to operate until 1945. Fifty-two countries signed the Chicago Convention on International Civil Aviation, also known as the Chicago Convention, in Chicago, Illinois, on 7 December 1944. Under its terms, a Provisional International Civil Aviation Organization (PICAO) was to be established, to be replaced in turn by a permanent organization when 26 countries ratified the convention. Accordingly, PICAO began operating on 6 June 1945, replacing ICAN. The 26th country ratified the Convention on 5 March 1947 and, consequently PICAO was disestablished on 4