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
Legal status of the Holy See For some authors, the current legal personality of the Holy See is a remnant of its preeminent role in medieval politics. Thus Arangio-Ruiz noted that the Holy See has been an actor in the evolution of international law since before the creation of strong nation states, and that it has maintained international personality since. For others, the international personality of the Holy See arises solely from its recognition by other states. In this sense, Brownlie argues that the personality of the Holy See “as a religious organ apart from its territorial base in the Vatican City” arises from the "principle