sentences:  Other forced conversions included the Roman Catholics inside the USSR and Eastern Bloc after the October Revolution.The various autocephalous and autonomous churches of the Orthodox Church are distinct in terms of administration and local culture, but for the most part exist in full communion with one another, with exceptions such as lack of relations between the Russian Orthodox Church Outside Russia (ROCOR) and the Moscow Patriarchate (the Orthodox Church of Russia) dating from the 1920s and due to the subjection of the latter to the hostile Soviet regime.However, attempts at reconciliation were made between the ROCOR and the Moscow Patriarchate with the ultimate purpose of reunification being reached on 17 May 2007.