Holy See of the East Holy See of the East Holy See of the East is an honorary name of the sees of a number of Christian churches in the Middle East and India. The Head & Father of the Marthoma Nazrani Church and the Gate of All India is commonly known as the successor to the Holy Apostolic See of St. Thomas. The Seat of the Patriarchs of the Chaldean Catholic Church and the Nestorian Catholicos-Patriarchs which emerged from the Ancient Church of the East is also a part of the Holy See of the East. The group of Saint Thomas Christians who left
Foreign relations of the Holy See between countries, including a dispute between Germany and Spain over the Caroline Islands. The Lateran Treaty of 1929 and the founding of the Vatican City State was not followed by any great immediate increase in the number of states with which the Holy See had official relations. This came later, especially after the Second World War. The Holy See, as a non-state sovereign entity and full subject of international law, started establishing diplomatic relations with sovereign states in the 15th century. It had the territory of the States of the Church under its direct sovereign rule since centuries before that