Counter-terrorism service troops advance towards Ghozlani military complex, south of Mosul, on February 23, 2017. Reuters
An Iraqi federal policeman fires a machine gun at an ISIS position on a nearby rooftop during fighting in west Mosul in April 2017. Getty Images
Iraqi troops patrol areas retaken from ISIS in western Mosul on March 9, 2017. AFP
Iraqi forces fighting to retake Mosul airport from ISIS fire a missile from a rocket launcher on February 23, 2017. Florian Neuhof / The National
An Iraqi soldier sprays fire at an ISIS position across the road in west Mosul. Florian Neuhof / The National
Iraqi army personnel check ammunition during clashes with ISIS militants north of Mosul on December 29, 2016. Reuters
Members of an Iraqi special forces police unit fire at ISIS. Reuters
A member of the Iraqi special forces runs for cover. Reuters
Iraqi families escape the fighting in a bullet-strewn vehicle outside Mosul. AFP
Iraqi families seen near Qayyarah, outside Mosul. AFP
Popular Mobilisation Forces (PMF) personnel fire artillery rounds. Reuters
An Iraqi air force helicopter fires missiles at ISIS targets. Reuters
Iraqi tanks advance towards ISIS positions in the Old City in western Mosul on June 18, 2017. Reuters
An image grab taken from an ISIS propaganda video shows Abu Bakr Al Baghdadi addressing worshippers at a mosque in Mosul in 2014. AFP
An Iraqi special forces soldier looks down the entrance of a tunnel used by ISIS fighters inside a restaurant in Bazwaya, east of Mosul. Reuters
Displaced Iraqis flee their homes in western Mosul. Reuters
Children play in Qayyara, outside Mosul, where ISIS fighters set fire to crude oil fields as they retreated in October 2016. Photo: Alessio Romenzi
An Iraqi army soldier gestures above an accused ISIS member who tried to flee Mosul on October 31, 2016. Photo: Alessio Romenzi
Al Nuri Mosque in Mosul, destroyed by ISIS, is being rebuilt with assistance from the UAE. Reuters
A man cries as he carries his daughter while walking from an ISIS-controlled part of Mosul towards Iraqi special forces during a battle in Mosul, Iraq, March 4, 2017. Reuters
ISIS militants firing automatic weapons during a firefight outside Mosul, near Nineveh, Iraq.
A view of Al Nuri Mosque in Mosul, Iraq, where ISIS declared a caliphate in 2014. Photo: Gus Palmer / Keo Films / Handout
Iraqi security forces take part in an operation against ISIS in Al Shura, south of Mosul. Reuters
Iraqi Counter-Terrorism Service making the victory gesture as members hold the black ISIS flag upside down outside the destroyed Al Nuri Mosque in the Old City of Mosul after the area was retaken. AFP
An Iraqi forces sniper looks on as smoke billows following an air strike by US-led international coalition forces fighting ISIS in the Old City of Mosul on July 9, 2017. AFP
A mass grave of ISIS victims in Mosul. AP
Iraqi soldiers take cover during clashes with ISIS in Mosul. Reuters
Counter-terrorism service troops advance towards Ghozlani military complex, south of Mosul, on February 23, 2017. Reuters
An Iraqi federal policeman fires a machine gun at an ISIS position on a nearby rooftop during fighting in west Mosul in April 2017. Getty Images
Iraqi troops patrol areas retaken from ISIS in western Mosul on March 9, 2017. AFP
Iraqi forces fighting to retake Mosul airport from ISIS fire a missile from a rocket launcher on February 23, 2017. Florian Neuhof / The National
An Iraqi soldier sprays fire at an ISIS position across the road in west Mosul. Florian Neuhof / The National
Iraqi army personnel check ammunition during clashes with ISIS militants north of Mosul on December 29, 2016. Reuters
Members of an Iraqi special forces police unit fire at ISIS. Reuters
A member of the Iraqi special forces runs for cover. Reuters
Iraqi families escape the fighting in a bullet-strewn vehicle outside Mosul. AFP
Iraqi families seen near Qayyarah, outside Mosul. AFP
Popular Mobilisation Forces (PMF) personnel fire artillery rounds. Reuters
An Iraqi air force helicopter fires missiles at ISIS targets. Reuters
Iraqi tanks advance towards ISIS positions in the Old City in western Mosul on June 18, 2017. Reuters
An image grab taken from an ISIS propaganda video shows Abu Bakr Al Baghdadi addressing worshippers at a mosque in Mosul in 2014. AFP
An Iraqi special forces soldier looks down the entrance of a tunnel used by ISIS fighters inside a restaurant in Bazwaya, east of Mosul. Reuters
Displaced Iraqis flee their homes in western Mosul. Reuters
Children play in Qayyara, outside Mosul, where ISIS fighters set fire to crude oil fields as they retreated in October 2016. Photo: Alessio Romenzi
An Iraqi army soldier gestures above an accused ISIS member who tried to flee Mosul on October 31, 2016. Photo: Alessio Romenzi
Al Nuri Mosque in Mosul, destroyed by ISIS, is being rebuilt with assistance from the UAE. Reuters
A man cries as he carries his daughter while walking from an ISIS-controlled part of Mosul towards Iraqi special forces during a battle in Mosul, Iraq, March 4, 2017. Reuters
ISIS militants firing automatic weapons during a firefight outside Mosul, near Nineveh, Iraq.
A view of Al Nuri Mosque in Mosul, Iraq, where ISIS declared a caliphate in 2014. Photo: Gus Palmer / Keo Films / Handout
Iraqi security forces take part in an operation against ISIS in Al Shura, south of Mosul. Reuters
Iraqi Counter-Terrorism Service making the victory gesture as members hold the black ISIS flag upside down outside the destroyed Al Nuri Mosque in the Old City of Mosul after the area was retaken. AFP
An Iraqi forces sniper looks on as smoke billows following an air strike by US-led international coalition forces fighting ISIS in the Old City of Mosul on July 9, 2017. AFP
A mass grave of ISIS victims in Mosul. AP
Iraqi soldiers take cover during clashes with ISIS in Mosul. Reuters
Counter-terrorism service troops advance towards Ghozlani military complex, south of Mosul, on February 23, 2017. Reuters