Orthodox Christians constituted a majority of believers in the Soviet Union. In the late 1980s, three Orthodox churches claimed substantial memberships there: the Russian Orthodox Church, the Georgian Orthodox Church, and the Ukrainian Autocephalous Orthodox Church (AOC). They were members of the major confederation of Orthodox churches in the world, generally referred to as the Eastern Orthodox Church. The first two functioned openly and were tolerated by the regime, but the Ukrainian AOC was not permitted to function openly. Parishes of the Belarusian Autocephalous Orthodox Church reappeared in Belarus only after the dissolution of the Soviet Union, but they did not receive recognition from the Belarusian Exarchate of the Russian Orthodox Church, which controls Belarusian eparchies.