Displaced people flee during a battle with Islamic State militants, in al-Zuhoor neighborhood of Mosul, Iraq, January 8, 2017. (Photo by Azad Lashkari/Reuters)





A displaced woman flees during a battle with Islamic State militants, in al-Zuhoor neighborhood of Mosul, Iraq, January 8, 2017. (Photo by Azad Lashkari/Reuters)





Displaced children sit in a cart as they flee during a battle with Islamic State militants, in al-Zuhoor neighborhood of Mosul, Iraq, January 8, 2017. (Photo by Azad Lashkari/Reuters)





A displaced Iraqi man pushes a woman in a wheelchair as they flee during a battle with Islamic State militants, in al-Zuhoor neighborhood of Mosul, Iraq, January 8, 2017. (Photo by Azad Lashkari/Reuters)





A military vehicle of Iraqi security forces is seen during a battle with Islamic State militants, in al-Zuhoor neighborhood of Mosul, Iraq, January 8, 2017. (Photo by Azad Lashkari/Reuters)





Members of the Iraqi forces inspect a hospital damaged by clashes during a battle between Iraqi forces and Islamic State militants in the Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of the Iraqi forces inspects a hospital damaged by clashes during a battle between Iraqi forces and Islamic State militants in the Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of the Iraqi forces inspects a hospital damaged by clashes during a battle between Iraqi forces and Islamic State militants in the Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





Members of the Iraqi rapid response forces stand with an Islamic State flag which they pulled down during a battle between Iraqi forces and Islamic State militants in the Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of the Iraqi rapid response forces walks past a hospital damaged by clashes during a battle between Iraqi forces and Islamic State militants in the Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





Members of the Iraqi rapid response forces stand on the top of vehicle during a battle between Iraqi forces and Islamic State militants in Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of the Iraqi rapid response forces inspects a hospital damaged by clashes during a battle between Iraqi forces and Islamic State militants in the Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





Displaced people flee during a battle with Islamic State militants, in the Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





Members of the Iraqi rapid response forces inspect a hospital damaged by clashes during a battle between Iraqi forces and Islamic State militants in the Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





Displaced people flee during a battle with Islamic State militants, in al-Zuhoor neighborhood of Mosul, Iraq, January 8, 2017. (Photo by Azad Lashkari/Reuters)





Iraqi forces help displaced people as they flee during a battle with Islamic State militants, in the al-Zuhoor neighborhood of Mosul, Iraq, January 8, 2017. (Photo by Azad Lashkari/Reuters)





A member of the Iraqi rapid response forces inspects a hospital damaged by clashes during a battle between Iraqi forces and Islamic State militants in the Wahda district of eastern Mosul, Iraq, January 8, 2017. (Photo by Alaa Al-Marjani/Reuters)





Iraqi Special Operations Forces (ISOF) stand guard after a car bomb exploded during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi Special Operations Forces (ISOF) react after a car bomb exploded during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Smoke rises from a car bomb that exploded during a battle with Islamic State militants in al-Andalus district, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi Special Operations Forces (ISOF) are seen during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





A burning car of Islamic State militants is seen during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi Special Operations Forces (ISOF) clashes during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi Special Operations Forces (ISOF) inspect weapons of lslamic State militants during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Citizens welcome Iraqi Special Operations Forces (ISOF) during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Citizens welcome Iraqi Special Operations Forces (ISOF) during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi Special Operations Forces (ISOF) gather during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





A child stands near a military vehicle of Iraqi Counter Terrorism Forces (ICTF) during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Young boy in the Andalus district holds up his shirt to show Iraqi forces that he is not wearing a suicide vest during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





A member of Iraqi Special Operations Forces (ISOF) walks during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi Special Operations Forces (ISOF) react after a car bomb exploded during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi Special Operations Forces (ISOF) check people after a car bomb exploded during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





A member of Iraqi Special Operations Forces (ISOF) eats food during an operation to clear the al-Andalus district of Islamic State militants, in Mosul, Iraq, January 16, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi rapid response forces take their position during a battle with Islamic State militants in the district of Yarimja in southern Mosul, Iraq, January 16, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of Iraqi rapid response forces take his position during a battle with Islamic State militants in the district of Yarimja in southern Mosul, Iraq, January 16, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of Iraqi rapid response forces take his position during a battle with Islamic State militants in the district of Yarimja in southern Mosul, Iraq, January 16, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of Iraqi Counter-Terrorism Service (CTS) forces holds his weapon during a battle with Islamic State militants in Andalus neighborhood of Mosul, Iraq, January 17, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of Iraqi Counter-Terrorism Service (CTS) forces takes his position during a battle with Islamic State militants in Andalus neighborhood of Mosul, Iraq, January 17, 2017. (Photo by Alaa Al-Marjani/Reuters)





A military vehicle of Iraqi Counter-Terrorism Service (CTS) forces is seen at the site of car bomb attack during a battle with Islamic State militants in Andalus neighborhood of Mosul, Iraq, January 17, 2017. (Photo by Alaa Al-Marjani/Reuters)





A military vehicle of the Iraqi Special Operations Forces (ISOF) is seen during an operation to clear the al-Zirai district of Islamic State militants in Mosul, Iraq, January 18, 2017. (Photo by Muhammad Hamed/Reuters)





Civilians leave the city to escape from clashes during a battle with Islamic State militants, in al-Zirai district in Mosul, Iraq, January 18, 2017. (Photo by Muhammad Hamed/Reuters)





Civilians leave the city to escape from clashes during a battle with Islamic State militants, in al-Zirai district in Mosul, Iraq, January 18, 2017. (Photo by Muhammad Hamed/Reuters)





Civilians give sweets to security forces during a battle with Islamic State militants in the al-Zirai district of Mosul, Iraq, January 18, 2017. (Photo by Muhammad Hamed/Reuters)





American army personnel gather at the University of Mosul during a battle with Islamic State militants in Mosul, Iraq, January 18, 2017. (Photo by Muhammad Hamed/Reuters)





A member of Iraqi rapid response forces fires a rocket launcher during a battle with Islamic State militants in the district of Yarimja in southern Mosul, Iraq, January 18, 2017. (Photo by Alaa Al-Marjani/Reuters)





Smoke rises from a bomb belonging to Islamic State militants after a controlled explosion by Iraqi rapid response forces, in the district of Yarimja in southern Mosul, Iraq, January 18, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of Iraqi rapid response forces fire a weapon during a battle with Islamic State militants in the district of Yarimja in southern Mosul, Iraq, January 18, 2017. (Photo by Alaa Al-Marjani/Reuters)





Thick smoke rises as a fire breaks out at oil wells set ablaze by Islamic State militants before fleeing the oil-producing region of Qayyara, Iraq, January 15, 2017. (Photo by Girish Gupta/Reuters)





Thick smoke rises as a fire breaks out at oil wells set ablaze by Islamic State militants before fleeing the oil-producing region of Qayyara, Iraq, January 15, 2017. (Photo by Girish Gupta/Reuters)





Civilians leave the city to escape from clashes during a battle with Islamic State militants, in al-Zirai district in Mosul, Iraq, January 19, 2017. (Photo by Muhammad Hamed/Reuters)





A member of Iraqi Special Operations Forces (ISOF) walks inside a mosque in al-Zirai district in Mosul, Iraq, January 19, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi army soldiers fire their weapons during a fight with Islamic State militants north of Mosul, Iraq, January 19, 2017. (Photo by Ari Jalal/Reuters)





Iraqi army soldiers detain a person suspected of belonging to Islamic State militants during a fight with Islamic State militants north of Mosul, Iraq, January 19, 2017. (Photo by Ari Jalal/Reuters)





An Iraqi soldier fires his weapon toward Islamic State militants north of Mosul, Iraq, January 19, 2017. (Photo by Ari Jalal/Reuters)





A member of the Iraqi security forces stands next to a tunnel used by Islamic State militants during battle with Islamic State militants in Talkeef district north of Mosul, Iraq, January 20, 2017. (Photo by Khalid al Mousily/Reuters)





A member of the Iraqi security forces carries bullets and a grenade during battle with Islamic State militants in Talkeef district north of Mosul, Iraq, January 20, 2017. (Photo by Khalid al Mousily/Reuters)





An Iraqi flag is seen on a top of a tank during a battle with Islamic State militants in Talkeef district, north of Mosul, Iraq, January 20, 2017. (Photo by Khalid al Mousily/Reuters)





A picture taken on January 19, 2017, shows a mosque in Mosul' s al- Andalus neighbourhood that was damaged during a battle between government forces and Islamic State (IS) group jihadists. Iraqi forces battled the last holdout jihadists in east Mosul after commanders declared victory there and set their sights on the city' s west, where more tough fighting awaits. (Photo by Dimitar Dilkoff/AFP Photo)





A masked Iraqi counter- terrorism service member (CTS) poses for a picture in the town of Bartalla, east of Mosul, as they search for Islamic State (IS) group fighters on January 18, 2017, during an ongoing military operation against the jihadists Iraqi forces have fully retaken east Mosul from the Islamic State group, a top commander said, three months after a huge offensive against the jihadist bastion was launched. (Photo by Ahmad Al-Rubaye/AFP Photo)





Iraqis walk down a street while smoke rises in the background following a car bomb explosion in eastern Mosul, on January 15, 2017, during an ongoing military operation by security forces against Islamic State (IS) group jihadists. Iraqi forces on January 14 retook Mosul's university from the Islamic State jihadist group, the latest key advance in efforts to recapture the eastern side of the city, officers said. (Photo by Dimitar Dilkoff/AFP Photo)





A member of the Iraqi special forces' Counter-Terrorism Service (CTS) fires his machine gun as he holds a position inside Mosul's university on January 15, 2017, during an ongoing military operation against Islamic State (IS) group jihadists. (Photo by Dimitar Dilkoff/AFP Photo)





The body of a suspected Islamic State (IS) group fighter lies on the ground in Mosul's al-Sahiroun neighbourhood on January 12, 2017, during a military operation by Iraqi security forces against IS militants. Iraqi government forces launched a major offensive to recapture Mosul from the Islamic State group on October 17, 2016. Since then, they have retaken many areas in the eastern parts of Iraq's second city, but districts to the west of the Tigris River are still firmly in IS hands. (Photo by Dimitar Dilkoff/AFP Photo)





An Iraqi man shields his daughter from seeing the body of an Islamic State (IS) fighter as they flee Mosul's al-Mithaq neighborhood on January 8, 2017, during an ongoing military operation against the militants. Elite Iraqi forces battling the Islamic State group in eastern Mosul reached the Tigris River that splits the city in two for the first time, a spokesman said. (Photo by Dimitar Dilkoff/AFP Photo)





A member of the Iraqi special forces' Counter-Terrorism Service (CTS) holds a sword while guarding a position at Mosul's university on January 15, 2017, during an ongoing military operation against Islamic State (IS) group jihadists. (Photo by Dimitar Dilkoff/AFP Photo)





An Iraqi family walks on a street in eastern Mosul on January 15, 2017, as they flee with other civilians during an ongoing military operation against Islamic State (IS) group jihadists. (Photo by Dimitar Dilkoff/AFP Photo)