 Other notable early international broadcasters included Vatican Radio (February 12, 1931), Radio Moscow, the official service of the Soviet Union (renamed the Voice of Russia, following the collapse of the Soviet Union).Clarence W. Jones started transmitting on Christmas Day, 1931 from Christian missionary radio station HCJB in Quito, Ecuador.Broadcasting in South Asia was launched in 1925 in Ceylon - Radio Ceylon, now the Sri Lanka Broadcasting Corporation is the oldest in the region.