An Iraqi man pushes a girl on a wheelchair as they flee the al- Abar neighbourhood in west of Mosul, while Iraqi forces battle against Islamic State (IS) group jihadist to recapture the city, on April 13, 2017. (Photo by Ahmad Al-Rubaye/AFP Photo)





An Iraqi special forces soldier wears a rose in his body armor as troops move from the Yarmouk neighborhood to take another district from Islamic State militant control in Mosul, Iraq, Wednesday, April 12, 2017. (Photo by Maya Alleruzzo/AP Photo)





An Iraqi federal policeman uses a helmet on a stick to try and draw fire from an Islamic State sniper in an attempt to make him reveal his position during the battle to recapture west Mosul on April 13, 2017 in Mosul, Iraq. Despite being completely surrounded, Islamic State fighters are continuing to put up stiff resistance to Iraqi forces who are now having to engage I.S in house to house fighting as they continue their battle to retake Iraq's second largest city of Mosul. (Photo by Carl Court/Getty Images)





An Iraqi federal policeman writes a Shia religious blessing on a mortar before firing it at an Islamic State position in west Mosul, on April 12, 2017 in Mosul, Iraq. Despite being completely surrounded, Islamic State fighters are continuing to put up stiff resistance to Iraqi forces who are now having to engage I.S in house to house fighting as they continue their battle to retake Iraq's second largest city of Mosul. (Photo by Carl Court/Getty Images)





Iraqi federal police fire a mortar at an Islamic State position during the battle to recapture west Mosul, on April 12, 2017 in Mosul, Iraq. (Photo by Carl Court/Getty Images)





Iraqi Shiite Muslim worshipers carry the symbolic coffin of the 8th century Imam Musa al-Kadhim during the funeral processions on the anniversary of his death at his shrine in Baghdad's northern district of Kadhimiya on April 23, 2017. (Photo by Sabah Arar/AFP Photo)





A Mosul residents shouts for help after he fled his home in west Mosul as fighting between Iraqi forces and the Islamic State group continues, Monday, April 24, 2017. (Photo by Bram Janssen/AP Photo)





A displaced Iraqi man sits on the ruins of a destroyed building outside Hammam al-Alil camp, south of Mosul, Iraq, April 12, 2017. (Photo by Marko Djurica/Reuters)





A member of the Iraqi Federal Police takes his rifle to hang it on his shoulder in an area controlled by Iraqi forces fighting the Islamic State in western Mosul, Iraq, April 12, 2017. (Photo by Andres Martinez Casares/Reuters)





An Iraqi boy walks past a building destroyed during the fighting between Iraqi forces and Islamic states militants in Qayyara, Iraq April 6, 2017. Picture taken April 6, 2017. (Photo by Suhaib Salem/Reuters)





An altar of a damaged church is seen in the town of Qaraqosh, south of Mosul, Iraq, April 11, 2017. (Photo by Marko Djurica/Reuters)





A damaged statue of Jesus Christ is seen inside a church in the town of Qaraqosh, south of Mosul, Iraq, April 11, 2017. (Photo by Marko Djurica/Reuters)





A member of the Iraqi Federal Police fires a machine gun towards Islamic State positions in western Mosul, Iraq, April 14, 2017. (Photo by Andres Martinez Casares/Reuters)





A smoke rises above Al-Nuri mosque in the old city as Iraqi forces fight Islamic State militants in Mosul, Iraq April 17, 2017. (Photo by Marko Djurica/Reuters)





Pupils attend a class at an elementary school in eastern Mosul, Iraq, April 17, 2017. (Photo by Marko Djurica/Reuters)





Displaced Iraqi children who fled their homes with their families play outside Hammam al-Alil camp south of Mosul, Iraq April 18, 2017. (Photo by Muhammad Hamed/Reuters)





An Iraqi girl stands on a hill close to her house in eastern Mosul, Iraq, April 19, 2017. (Photo by Marko Djurica/Reuters)





Ameen Mukdad, a violinist from Mosul who lived under ISIS's rule for two and a half years where they destroyed his musical instruments, performs at Nabi Yunus shrine in eastern Mosul, Iraq, April 19, 2017. (Photo by Muhammad Hamed/Reuters)





Displaced children who fled the Islamic State stronghold of Mosul with their families play at Khazer camp, Iraq April 21, 2017. (Photo by Muhammad Hamed/Reuters)





A boy holds the Iraqi flag as he plays in the water with other children during a Friday holiday at Shallalat district (Arabic for “waterfalls”) in eastern Mosul, Iraq, April 21, 2017. (Photo by Muhammad Hamed/Reuters)





Displaced Iraqis display a white shirt being used as a flag as they flee after a battle between the Iraqi Counter Terrorism Service and Islamic State militants in western Mosul, Iraq, April 22, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi children carry water containers after the battle between the Iraqi Counter Terrorism Service and Islamic State militants in western Mosul, Iraq, April 22, 2017. (Photo by Muhammad Hamed/Reuters)





A displaced Iraqi woman and children are transported in a cart as the battle between the Iraqi Counter Terrorism Service and Islamic State militants continues nearby, in western Mosul, Iraq, April 23, 2017. (Photo by Marko Djurica/Reuters)





Members of the Iraqi Federal Police clash with the Islamic State fighters in western Mosul, Iraq, April 24, 2017. (Photo by Muhammad Hamed/Reuters)





A member of the Iraqi Federal Police sits in guard during their fighting the Islamic State in western Mosul, Iraq, April 24, 2017. (Photo by Muhammad Hamed/Reuters)





A boy sits on his bicycle in front of a toy store, in eastern Mosul, Iraq April 21, 2017. (Photo by Marko Djurica/Reuters)





An Iraqi Counter Terrorism Services (CTS) soldier looks though binoculars during a battle between CTS and Islamic State militants in western Mosul, Iraq, April 25, 2017. (Photo by Ahmed Jadallah/Reuters)





A sweater of a child hangs on a rope in an abandoned house in western Mosul, Iraq, April 12, 2017. (Photo by Andres Martinez Casares/Reuters)





Soldier with the Iraqi special forces walk through the streets of Mosul as fighting between Iraqi forces and the Islamic State group continues on Saturday, April 22, 2017. (Photo by Bram Janssen/AP Photo)





Iraqi Yazidis light up a balloon outside Lalish temple situated in a valley near Dohuk, 430 km (260 miles) northwest of Baghdad, during a ceremony to celebrate the Yazidi New Year on April 18, 2017. The Yazidis, who number about 1.6 million, commemorate the arrival of the light into the world during the celebration. (Photo by Safin Hamed/AFP Photo)