Christians in the country currently called Iraq... part 2

Christian communities existed in the regions of Assyria, Babylonia, and Persia as early as the second century. A council is known to have been held at Seleucia-Ctesiphon about 325 to deal with jurisdictional conflicts among the leading bishops. At a subsequent Council of Seleucia-Ctesiphon in 410 the Christian communities of Mesopotamia renounced all subjection to Antioch and the "Western" bishops and the Bishop of Seleucia-Ctesiphon assumed the rank of Catholicos