Fallujah

Iraqi pro-government forces advance towards the city of Fallujah on May 23, 2016, as part of a major assault to retake the city from Islamic State (IS) group. Iraqi forces, consisting of special forces, soldiers, police, militia forces and pro-government tribesmen, launched a major assault to retake Fallujah, the scene of deadly battles during the US occupation and one of the toughest targets yet in Baghdad's war on the Islamic State group.  Prime Minister Haider al-Abadi, commander-in-chief of the armed forces, announced the start of operations in the middle of the night and then visited the battle's operations room. / AFP PHOTO / AHMAD AL-RUBAYEAHMAD AL-RUBAYE/AFP/Getty Images

Ahmad Al-Rubaye/AFP

Iraqi pro-government forces advance towards the city of Fallujah, as part of a major assault to retake the city from Islamic State (IS) group. Iraqi forces, consisting of special forces, soldiers, police, militia forces and pro-government tribesmen, launched a major assault to retake Fallujah, the scene of deadly battles during the US occupation and one of the toughest targets yet in Baghdad’s war on the Islamic State group.

Iraqi Shiite fighters from the Popular Mobilisation units

Ahmad Al-Rubayeahmad/AFP/Getty Images

Iraqi Shia fighters from the Popular Mobilisation units supporting the Iraqi government forces fire towards Islamic State group positions during clashes on the northern outskirts of the city of Fallujah, west of the capital Baghdad.

Iraqi citizens are searched before casting their votes during the country's provincial elections in Fallujah, Iraq, Thursday, June 20, 2013. Iraqis in two Sunni-dominated provinces voted Thursday in provincial elections marked by tight security measures that left streets in former insurgent strongholds largely deserted. (AP Photo/Khalid Mohammed)

Khalid Mohammed/AP

Iraqi citizens are searched before casting their votes during the country’s provincial elections in Fallujah, Iraq, on Thursday. Iraqis in two Sunni-dominated provinces voted Thursday in provincial elections marked by tight security measures that left streets in former insurgent strongholds largely deserted