Demographics of Iraq
97% of Iraqis follow Islam: 61% Shia and 34% Sunni. 1% of these describe themselves as "Just a Muslim". According to the CIA Factbook, Shias make up 60% of population, while Sunnis 35%. Christianity accounts for 5%, and the rest practice Mandaeism, Yazidism and other religions.
Iraq
During 2013, Sunni militant groups stepped up attacks targeting the Iraq's Shia population in an attempt to undermine confidence in the Nouri al-Maliki-led government. In 2014, Sunni insurgents belonging to the Islamic State of Iraq and the Levant (ISIL) terrorist group seized control of large swathes of land including several major Iraqi cities, like Tikrit, Fallujah and Mosul creating hundreds of thousands of internally displaced persons amid reports of atrocities by ISIL fighters.