Holy See of the East the Church of the East after the Coonan Cross Oath and joined the Church of Antioch also claims the title of the Holy See of the East, since St. Thomas is also the founder of this churches. The Malankara Orthodox Syrian Church which evolved out of the Malankara Church as a part of the Oriental Orthodox Churches claims the title of the Catholicos of the East and the Holy Apostolic See of St. Thomas. The Malankara Syrian Catholic Church which evolved from the Malankara Church as a part of the Eastern Catholic Church in full communion with the Holy See
Protectorate of the Holy See and the French took control of Syria, for which France had been given a mandate. Protectorate of the Holy See At the San Remo conference (19-26 April 1920), the Mandate for Palestine was allocated to Great Britain. France required the continuation of its religious protectorate in Palestine but Italy and Great Britain opposed it. France lost the religious protectorate, but, thanks to the Holy See, continued to enjoy liturgical honors in Mandatory Palestine until 1924, when the honors were abolished. The precise boundaries of all territories, including that of the British Mandate for Palestine, were left unspecified, to "be determined