Most arrived due to ethnic and religious conflicts, leaving Turkey, Iran, and Iraq. The migration to Canada may be broken up into a number of distinct periods: early settlement and the subsequent waves of migration sparked by the Assyrian genocide in present day Turkey, the Iranian Revolution of 1979 and, more recently, the Iraq War. The last 2006 Census Canada counted 8,650 Assyrians in the country. The Assyrian/Chaldean/Syriac organizations claim that their population in 2010 is around 23,000. Other sources claimed that only the Chaldean Catholic Assyrians are more than 38,000 in Canada. The first period of known mass-migration came just after the Assyrian Genocide in the dying days of the Turkish Ottoman Empire. The second and perhaps largest wave of migration into came during the Iran-Iraq War. Under the shadow of war, Saddam Hussein's al-Anfal Campaign constituted a major force for migration for Iraq's Assyrian population.