Three world telecommunications conferences, called by the United States, were held throughout the spring and summer of 1947 to deal with urgent problems resulting from dislocations of war and recent advances in the several fields covered by the International Telecommunications Union. At a preliminary Telecommunications Conference, held at Moscow in September, 1946, representatives of China, France, the United Kingdom, USSR, and the United States had decided that existing telecommunications conventions and regulations required revision to meet present needs; for this purpose the conferences were called.