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
Embassy of the United States to the Holy See in 1953. In 1994, the U.S. government acquired the property as the new chancery for embassy. On October 16, 2017, Callista L. Gingrich was confirmed by the U.S. Senate as the next Ambassador to the Holy See. The embassy is a part of the "Tri-Mission Community" in Rome, the other two being the Embassy of the United States, Rome and the United States Mission to the U.N. Agencies in Rome. Formal diplomatic relations with the Holy See were established in 1984 by President Ronald Reagan and Pope John Paul II. The mission works in partnership with the Holy See on