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 of effectiveness", that is, from the fact that other states voluntarily recognize the Holy See, acquiesce having bilateral relations with it, and in fact do so, in a situation where no rule of "ius cogens" is breached. For him, though, the international personality thus conferred is effective only towards those states prepared to enter into diplomatic relations with it. Crawford similarly believes that the recognition of a number of states is important evidence to acknowledge the legal personality of the Holy See, so that, today, it cannot be denied. For a third group of authors, the international legal personality of