The Islamic State of Iraq and the Levant claims responsibility for the Egyptian Coptic Church bombing in Cairo that claimed 25 lives on 11 December.
Campaigning in the United Kingdom general election is suspended after the bombing at the Manchester Arena. The death toll is 22 with 59 injured. ISIL claims responsibility. Singer and actress Ariana Grande suspends her Dangerous Woman Tour.
The pro-government Popular Mobilization Forces militia takes control of the mostly destroyed ancient city of Hatra in Iraq's Nineveh Governorate, following clashes with ISIL, who seized the ruins in 2014.
The British-based Syrian Observatory for Human Rights reports U.S.-led coalition airstrikes on the Islamic State-held city of Manbij in northern Syria kill at least 56 civilians, including 11 children, and injure dozens more.