Holy See of the East Seat of the Major Archiepiscopal Curia is in Catholicate Centre, Trivandrum, Kerala, India. The Chaldean Catholic Church is a part of the Eastern Rite Churches under the patronage of Pope Francis of Rome and under the leadership of the Patriarch, Louis Raphael I Sako. 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
Foreign relations of the Holy See time. Currently it has the territory of the State of the Vatican City under its direct sovereign rule. In the period of 1870-1929 between the annexation of Rome by the Kingdom of Italy and the ratification of the Lateran Treaty establishing the current Vatican City State, the Holy See was devoid of territory. In this period some states suspended their diplomatic relations, but others retained them (or established such relations for the first time or reestablished them after a break), so that the number of states that did have diplomatic relations with the Holy See almost doubled (from 16 to