A customer of the Hamal Alil sulphur spa gets a scrub and massage south of Mosul, Iraq, on Thursday, April 27, 2017. Many Iraqi soldiers visit the spa in between fighting against the Islamic State group for relaxation. (Photo by Bram Janssen/AP Photo)





Iraqi children stand at a camp for internationally display people in Hammam al- Alil on May 14, 2017, after fleeing west Mosul due to the government forces ongoing offensive against Islamic State (IS) group jihadists. (Photo by Fadel Senna/AFP Photo)





In this Wednesday, May 10, 2017 photo, an elderly woman and a child are pulled on a cart as civilians flee heavy fighting between Islamic State militants and Iraqi special forces in western Mosul, Iraq. (Photo by Maya Alleruzzo/AP Photo)





Terrorism Services (CTS) advance towards Mosul' s western Rifai neighbourhood during their ongoing offensive against Islamic State (IS) group fighters on May 16, 2017. (Photo by Ahmad Al-Rubaye/AFP Photo)





A diplaced Iraqi man rides a donkey, followed by his dog as pro-government Hashed al-Shaabi (Popular Mobilisation) paramilitary forces advance towards the UNESCO-listed ancient city of Hatra, southwest of the northern city of Mosul, during an offensive to retake the area from Islamic State (IS) group fighters, on April 26, 2017. Hatra is the latest important archaeological site to be recaptured from IS. Jihadists had embarked on a campaign of destruction against archaeological sites after they seized swathes of Iraq and Syria in a lightning 2014 offensive. The full extent of the harm to Hatra remains unclear. (Photo by Ahmad Al-Rubaye/AFP Photo)





A child plays between broken cars after battles between Iraqi Federal Police and the Islamic State fighters in western Mosul, Iraq, April 28, 2017. (Photo by Muhammad Hamed/Reuters)





A displaced boy who had fled his home waits outside Hammam al-Alil camp south of Mosul, Iraq April 25, 2017. (Photo by Muhammad Hamed/Reuters)





Popular Mobilization Forces (PMF) fire towards Islamic State militants during a battle in Al-Hatra, Southwest Mosul, Iraq April 25, 2017. (Photo by Reuters/Stringer)





A vehicle that belonged to Islamic State militants is seen on the outskirts of the ancient city of Hatra near Mosul,Iraq April 26, 2017. (Photo by Reuters/Stringer)





Iraqi paramilitary troops fire towards Islamic State militants during a battle with Islamic State militants on the outskirts of the ancient city of Hatra near Mosul,Iraq April 26, 2017. (Photo by Reuters/Stringer)





An Iraqi man sells food at a roadside stall outside Hammam al-Alil camp south of Mosul, Iraq, April 27, 2017. (Photo by Danish Siddiqui/Reuters)





Iraqi paramilitary troops fire towards Islamic State militants during a battle with Islamic State militants on the outskirts of the ancient city of Hatra, south of Mosul, Iraq April 27, 2017. (Photo by Reuters/Stringer)





Iraqi paramilitary troops fire towards Islamic State militants during a battle with Islamic State militants on the outskirts of the ancient city of Hatra, south of Mosul, Iraq April 27, 2017. (Photo by Reuters/Stringer)





A displaced Iraqi girl climbs a fence to get inside Hammam al-Alil camp south of Mosul, Iraq, April 27, 2017. (Photo by Danish Siddiqui/Reuters)





A member of the Iraqi Federal Police walks next to a destroyed house after their clashes with the Islamic State fighters in western Mosul, Iraq, April 28, 2017. (Photo by Muhammad Hamed/Reuters)





Cartoon characters defaced by Islamic State militants are seen at a children's hospital, in eastern Mosul, Iraq April 26, 2017. (Photo by Danish Siddiqui/Reuters)





A members of the Iraqi Federal Police throws a hand grenade during clashes with the Islamic State fighters in western Mosul, Iraq on April 29, 2017. (Photo by Danish Siddiqui/Reuters)





Displaced Iraqis from Mosul wait to cross the Tigris by boat after the bridge has been temporarily closed, at the village of Thibaniya, south of Mosul, Iraq May 3, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi woman Lila Ayed, 37, whose husband was killed and two of her daughters went missing during the fighting in Mosul, waits with her children to cross the Tigris river by a military boat after the bridge has been temporarily closed, south of Mosul, Iraq May 4, 2017. (Photo by Suhaib Salem/Reuters)





A displaced Iraqi holds the body of his wife, who was killed during the fighting in Mosul, on a boat sailing to cross the Tigris River after the bridge has been temporarily closed, in western Mosul, Iraq May 6, 2017. (Photo by Suhaib Salem/Reuters)





A member of Iraqi Rapid response forces takes position during clashes with Islamic State fighters in north west of Mosul, Iraq, May 9, 2017. (Photo by Danish Siddiqui/Reuters)





Members of Iraqi Rapid response forces look at an air strike during clashes with Islamic State fighters at a frontline in north west of Mosul, Iraq on May 9, 2017. (Photo by Danish Siddiqui/Reuters)





Displaced Iraqis flee during clashes between Iraqi forces and Islamic State militants in western Mosul, Iraq, May 16, 2017. (Photo by Danish Siddiqui/Reuters)





A mobile phone rigged with explosive is seen during the battle between Iraqi forces and Islamic State militants in western Mosul, Iraq, May 17, 2017. (Photo by Alaa Al-Marjani/Reuters)





Displaced Iraqis from Mosul's western Rabie neighbourhood flee their homes as security forces advance into the area during the ongoing offensive against Islamic State (IS) group fighters on May 17, 2017. (Photo by Ahmad Al-Rubaye/AFP Photo)





A man pushes two children in a wheelchair as they flee heavy fighting between Islamic State militants and Iraqi special forces in Mosul, Iraq, Wednesday, May 10, 2017. (Photo by Maya Alleruzzo/AP Photo)





This undated photo obtained by the Associated Press shows an Iraqi bodyguard hired by Sallyport Global to protect VIPs. When a Toyota SUV was stolen from Balad air base, he became the chief suspect and was linked to a dangerous Iran-backed militia and was viewed by investigators as “a hard-core recruit to become a terrorist who poses a serious threat to all personnel on this base”. (Photo via AP Photo)





Ten-year-old Akram Rasho Khalaf pauses as he talks about how he had been captured at the age of 7 and trained by Islamic State militants, at the Khabarto Camp for internally displaced people in Dahuk, Iraq, on Friday, April 14, 2017. His family's town of Khidir Sheikh Sipa, northern Iraq, was overrun by the militants in August 2014. Akram’s uncle says his nephew has been deeply affected by his time in captivity, suffering nightmares, anxiety, sleeplessness and bedwetting. (Photo by Maya Alleruzzo/AP Photo)





A girl sleeps in her father's arms in western Mosul after fleeing from fighting between Iraqi forces and the Islamic State group, Thursday, May 11, 2017. (Photo by Bram Janssen/AP Photo)





A man stands in front of a destroyed car and house in western Mosul, Thursday, May 11, 2017. U.S.-backed Iraqi forces were moving to surround Mosul's Old City on Thursday, a week after launching a fresh push to drive Islamic State militants from areas they still hold. (Photo by Bram Janssen/AP Photo)





A girl with a shaved head and her father cry as the family flees the al-Refai neighborhood while Iraqi special forces battle Islamic State militants in western Mosul, Iraq, Wednesday, May 17, 2017. (Photo by Maya Alleruzzo/AP Photo)





A boy holds his mother's hand and waves to soldiers while fleeing the al-Refai neighborhood as Iraqi special forces battle Islamic State militants in western Mosul, Iraq, Wednesday, May 17, 2017. (Photo by Maya Alleruzzo/AP Photo)





A man rushes his daughter to safety while fleeing the al-Rifai neighborhood as Iraqi special forces battle Islamic State militants, in western Mosul, Iraq, Wednesday, May 17, 2017. (Photo by Maya Alleruzzo/AP Photo)





Displaced Iraqi girls from western Mosul react upon their arrival at the Hammam al-Alil camp on March 25, 2017, as Iraq's elite Counter-Terrorism Service retook full control of Tenek – one of the largest neighbourhoods in west Mosul – further tightening the noose on the Islamic State group. (Photo by Ahmad Al-Rubaye/AFP Photo)





An Iraqi girl carries a baby in a backpack turned into a baby carrier as displaced Iraqis from western Mosul's al-Islah al-Zaraye neighbourhood flee their area on May 12, 2017 during a government forces' military offensive to retake the area from Islamic State (IS) group fighters. (Photo by Ahmad Al-Rubaye/AFP Photo)





Iraqis buy books at an open-air market in the capital Baghdad's Mutanabi Street on May 5, 2017, to donate them to the University of Mosul's library, as part of an initiative to replenish the institution after its documents were destroyed by Islamic State (IS) group fighters when they took the city. (Photo by Sabah Arar/AFP Photo)





An Iraqi girl stands amid bricks baking dry in the sun at a brick factory near the central Iraqi shrine city of Najaf on May 16, 2017. (Photo by Haidar Hamdani/AFP Photo)





Abdul Aziz, 15, smokes a cigarette while waiting for customers to buy the mud from a sulphur well near the Hamam Alil spa south of Mosul, Iraq on Thursday, April 27, 2017. The mud is supposedly healthy for the skin. Before the Islamic State took over the town of Hamam Alil in 2014, people from all over Iraq visited the historic spa. (Photo by Bram Janssen/AP Photo)





Mosul residents flee their homes as Iraqi forces battle the Islamic State group in a street to street fight in west Mosul, Monday, April 24, 2017. (Photo by Bram Janssen/AP Photo)





Members of the Iraqi Counter-Terrorism Service (CTS) take position as they advance towards Mosul's Al-Oraibi western district on May 14, 2017, during the ongoing offensive to retake the city from Islamic State (IS) group fighters. (Photo by Ahmad Al-Rubaye/AFP Photo)





Members of the Iraqi Counter-Terrorism Service (CTS) prepare ammunitions as they advance towards Mosul's Al-Oraibi western district on May 14, 2017, during the ongoing offensive to retake the city from Islamic State (IS) group fighters. (Photo by Ahmad Al-Rubaye/AFP Photo)





Members of the Iraqi Counter-Terrorism Service (CTS) take position as they advance towards Mosul's Al-Oraibi western district on May 14, 2017, during the ongoing offensive to retake the city from Islamic State (IS) group fighters. (Photo by Ahmad Al-Rubaye/AFP Photo)





Members of the Iraqi Counter-Terrorism Service (CTS) take position as they advance towards Mosul's Al-Oraibi western district on May 14, 2017, during the ongoing offensive to retake the city from Islamic State (IS) group fighters. (Photo by Ahmad Al-Rubaye/AFP Photo)





Displaced Iraqis walk after evacuating their homes in a neighbourhood of west Mosul on May 17, 2017, during an ongoing offensive from the Iraqi forces to retake the area from Islamic State (IS) group fighters. Iraqi forces pound the Islamic State group in the last pockets it controls of its former bastion west Mosul after spokesmen said the jihadist group was “on the brink of total defeat”. (Photo by Fadel Senna/AFP Photo)