The Assyrian communities that are still left in the Assyrian homeland are in Syria ( 400,000 ) , Iraq ( 300,000 ) , Iran ( 20,000 ) , and Turkey ( 15,000 – 25,100 ) . Most of the Assyrians living in Syria today , in the Al Hasakah Governorate in villages along the Khabur river , descend from refugees that arrived there after the Assyrian Genocide and Simele massacre of the 1910s and 30s . Christian communities of Oriental Orthodox Syriacs lived in Tur Abdin , an area in Southeastern Turkey , Nestorian Assyrians lived in the Hakkari Mountains , which straddles the border of northern Iraq and Southern Turkey , as well as the Urmia Plain , an area located on the western bank of Lake Urmia , and Chaldean and Syriac Catholics lived in the Nineveh Plains , an area located in Northern Iraq
Simele massacre
Simele massacre
Assyrian homeland