Most Assyrian Catholics in Iran today are members of the Chaldean Catholic Church. They belong to the Syriac Orthodox Church, Syriac Catholic Church, and Chaldean Catholic Church. The Chaldean Catholic Church uses the East Syriac Rite. There are three main Assyrian subgroups&colon; Eastern, Western, Chaldean. The last Babylonian king, Nabonidus (who was Assyrian-born and not a Chaldean), improved the ziggurat. The faithful follow the Latin, Byzantine, Armenian and Chaldean Rite. "Belteshazzar" was the Babylonian name given to Daniel, which undoubtedly referred to a Chaldean deity. Again, it is unclear whether he was a Chaldean or a native Babylonian. Nebuchadnezzar II became king of the Chaldean Empire in 605 BCE. Markos was born in Iraq to Chaldean Catholic parents. It is not to be confused with the modern language Chaldean Neo-Aramaic. There are 38,000 Chaldean Catholics in Canada. A small number of Chaldean Catholic families live in Israel and the Palestinian territories. In 2007, Chaldean Catholic Church priest Fr. Although he was an Arab nationalist and a member of the Chaldean Catholic Church.