Iraqi soldiers drag the dead body of who they say was an Islamic State militant, in Shayyalah al-Imam near Mosul, Iraq December 5, 2016. (Photo by Mohammed Salem/Reuters)





The dead body of who Iraqi forces say was an Islamic State militant is seen tied after it was dragged by Iraqi soldiers, in Shayyalah al-Imam near Mosul, Iraq December 5, 2016. (Photo by Mohammed Salem/Reuters)





Iraqi soldiers fire mortar shells towards Islamic State positions, in Shayyalah al-Imam near Mosul, Iraq December 5, 2016. (Photo by Mohammed Salem/Reuters)





Iraqi soldiers take cover during an operation against Islamic State militants in the frontline in neighbourhood of Intisar, eastern Mosul, Iraq, December 5, 2016. (Photo by Thaier al-Sudani/Reuters)





A child sits while eating on the street in Mosul, Iraq, December 5, 2016. (Photo by Thaier al-Sudani/Reuters)





Smoke from clashes during a battle with Islamic State militants is seen rising behind damaged buildings in Mosul, Iraq, December 5, 2016. (Photo by Thaier al-Sudani/Reuters)





Iraqi soldiers carry weapons during an operation against Islamic State militants in the neighbourhood of Intisar, eastern Mosul, Iraq, December 5, 2016. (Photo by Thaier al-Sudani/Reuters)





Displaced Iraqi children, who fled the Islamic State stronghold of Mosul, play at Khazer camp, Iraq December 5, 2016. (Photo by Alaa Al-Marjani/Reuters)





Displaced Iraqi people, who fled the Islamic State stronghold of Mosul, are seen at Khazer camp, Iraq December 5, 2016. (Photo by Alaa Al-Marjani/Reuters)





Displaced Iraqi children, who fled the Islamic State stronghold of Mosul, play at Khazer camp, Iraq December 5, 2016. (Photo by Alaa Al-Marjani/Reuters)





Displaced people, fleeing the violence of Islamic State militants in outskirts of Sinjar, walk past Shiite fighters in Sinjar, Iraq, December 5, 2016. (Photo by Reuters/Stringer)





Displaced people, fleeing the violence of Islamic State militants in outskirts of Sinjar, are transferred by military vehicle of Shiite fighters to the camps in Sinjar, Iraq, December 5, 2016. (Photo by Reuters/Stringer)





Displaced people, fleeing the violence of Islamic State militants in outskirts of Sinjar, walk past Shiite fighters in Sinjar, Iraq, December 5, 2016. (Photo by Reuters/Stringer)





An Iraqi soldier carries a RPG as he walks among wreckage of buildings damaged from clashes in the frontline during a battle with Islamic State militants in the neighbourhood of Intisar, eastern Mosul, Iraq, December 6, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqi soldiers take cover during clashes with Islamic State militants in the frontline in the neighbourhood of Intisar, eastern Mosul, Iraq, December 6, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqi army fires towards Islamic State militant positions in Mosul from the village of Adhbah, south of Mosul Iraq, December 6 2016. (Photo by Thaier Al-Sudani/Reuters)





A member of federal police forces fires towards Islamic State militants during clashes in the frontline village of Adhbah, south of Mosul, Iraq, December 6, 2016. (Photo by Thaier Al-Sudani/Reuters)





Displaced people who are fleeing clashes, ride on a vehicle in the outskirts of Mosul, Iraq, December 6, 2016. (Photo by Thaier Al-Sudani/Reuters)





Displaced children, who are fleeing from Islamic State militants, are transferred to camps in Qayyara, Iraq, December 6, 2016. (Photo by Alaa Al-Marjani/Reuters)





Smoke rises from oil wells set ablaze by Islamic State militants before fleeing the oil-producing region of Qayyara, Iraq December 6, 2016. (Photo by Alaa Al-Marjani/Reuters)





American vehicles drive on the outskirts of Qayyara, Iraq December 6, 2016. (Photo by Alaa Al-Marjani/Reuters)





American vehicles drive on the outskirts of Qayyara, Iraq December 6, 2016. (Photo by Alaa Al-Marjani/Reuters)





A displaced girl who is fleeing clashes, rides in a vehicle on the outskirts of Mosul, Iraq, December 6 2016. (Photo by Thaier Al-Sudani/Reuters)





Iraqi forces backed by tribal militias fire artillery during battle to retake a village from the Islamic State on the eastern bank of the river Tigris, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Iraqi forces backed by tribal militias during battle to retake a village from the Islamic State on the eastern bank of the river Tigris, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Iraqi forces backed by tribal militias during battle to retake a village from the Islamic State on the eastern bank of the river Tigris, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Iraqi forces backed by tribal militias during battle to retake a village from the Islamic State on the eastern bank of the river Tigris, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Displaced Iraqis, fleeing villages under Islamic State control, sit in a van as security forces backed by tribal militias battle to retake area on the eastern bank of the river Tigris, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Displaced Iraqis, fleeing villages under Islamic State control, sit in a van as security forces backed by tribal militias battle to retake area on the eastern bank of the river Tigris, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Iraqi forces backed by tribal militias during battle to retake a village from the Islamic State on the eastern bank of the river Tigris, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Displaced Iraqis, fleeing villages under Islamic State control, sit in a van as security forces backed by tribal militias battle to retake area on the eastern bank of the river Tigris, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Iraqi forces backed by tribal militias during battle to retake a village from the Islamic State on the eastern bank of the river Tigris, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Iraqi army members ride in a military vehicle in Bartila, Iraq December 7, 2016. (Photo by Alaa Al-Marjani/Reuters)





A Yazidi temple is seen in Lalish, Shikhan province, Kurdistan, northern Iraq, December 7, 2016. (Photo by Ari Jalal/Reuters)





A displaced child from the minority Yazidi sect, lives at an unfinished house in Duhok province, northern Iraq, December 7, 2016. (Photo by Ari Jalal/Reuters)





Yazidi men pray at a Yazidi temple in Lalish, Shikhan province, Kurdistan, northern Iraq, December 7, 2016. (Photo by Ari Jalal/Reuters)





Iraqi militiawoman Miaad al-Jubbouri stands near Iraqi soldiers during their fight against Islamic State militants, east of Mosul, Iraq December 7, 2016. (Photo by Mohammed Salem/Reuters)





Iraqis gather outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqi soldiers distribute water to children outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqis wait outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqis wait outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqis wait outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqi women wait outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





An Iraqi girl waits outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





An Iraqi police officer gestures for Iraqi women to move back as they wait outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





An Iraqi man waits outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





An Iraqi girl runs outside a distribution point run by United Nations agencies at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqis display a white flag as they carry away a dead body at Zahra district, east of Mosul, Iraq December 8, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqi army fires towards Islamic State militant positions in Mosul from outskirts of Bartila, Iraq December 8, 2016. (Photo by Alaa Al-Marjani/Reuters)





Handcuffed men, who according to the Iraqi security forces are suspected Islamic State militants, are seen in Eelam neighborhood east of Mosul, Iraq, December 8, 2016. (Photo by Reuters/Stringer)





Handcuffed men, who according to the Iraqi security forces are suspected Islamic State militants, are seen in Eelam neighborhood east of Mosul, Iraq, December 8, 2016. (Photo by Reuters/Stringer)





Handcuffed men, who according to the Iraqi security forces are suspected Islamic State militants, are seen in Eelam neighborhood east of Mosul, Iraq, December 8, 2016. (Photo by Reuters/Stringer)





Iraqi security forces members drive a military vehicle in Qaraqosh, near Mosul, Iraq December 9, 2016. (Photo by Alaa Al-Marjani/Reuters)





Iraqi Christians come to visit the heavily damaged Church of the Immaculate Conception after Iraqi forces recaptured it from Islamic State in Qaraqosh, near Mosul, Iraq, December 9, 2016. (Photo by Ammar Awad/Reuters)





A damaged Church of the Immaculate Conception after Iraqi forces recaptured it from Islamic State is seen in Qaraqosh, near Mosul, Iraq, December 9, 2016. (Photo by Ammar Awad/Reuters)





Iraqi Christians come to visit the heavily damaged Church of the Immaculate Conception after Iraqi forces recaptured it from Islamic State in Qaraqosh, near Mosul, Iraq, December 9, 2016. (Photo by Ammar Awad/Reuters)





Yousuf Odey, 10, who was wounded in the eye by Islamic State militants, is treated by doctors at a clinic in Zahra district in Mosul, Iraq, Wednesday, December 7, 2016. A senior Iraqi commander says special forces captured a new neighborhood from Islamic State militants in eastern Mosul, the latest gain in a massive government military operation now in its seventh week. (Photo by Manu Brabo/AP Photo)





A Iraqi soldier of the 9th division is seen within a Humvee in Shyma district in Mosul, Iraq, Tuesday, December 6, 2016. Iraqi forces, backed by the U.S.-led international coalition, launched a campaign in October to retake Mosul, the country's second largest city and IS's last major urban bastion in Iraq. (Photo by Manu Brabo/AP Photo)