Popular Mobilization Forces (PMF) launch a rocket during clashes with Islamic State militants on the outskirts of the town of Hammam Al-Alil in south of Mosul, Iraq October 30, 2016. (Photo by Reuters/Stringer)





Children who just fled Abu Jarbuah village sit at a Kurdish Peshmerga position between two front lines near Bashiqa, east of Mosul, Iraq October 29, 2016. (Photo by Zohra Bensemra/Reuters)





A Kurdish Peshmerga soldier watches a boy who had just fled Abu Jarbuah village while he and his family depart the Kurdish Peshmerga position between two frontlines, near Bashiqa east of Mosul, on a military truck heading to a camp for the displaced, Iraq October 29, 2016. (Photo by Zohra Bensemra/Reuters)





Members of an Iraqi special forces police unit fire their weapons at Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





A member of Iraqi special forces police runs for cover as he fires his rifle during clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





A member of Iraqi special forces police takes a rest during clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





A member of Iraqi special forces police runs for cover during clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





An Iraqi airforce helicopter fires missiles at Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





Members of Iraqi special police force stand during clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





Members of Iraqi special forces police sit on their armoured vehicle before clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





A member of Iraqi special forces police looks as smoke rises over Islamic State fighters positions during heavy bombardment in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





Members of Iraqi special forces police unit fire their weapons at Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





Members of Iraqi special forces police run for cover during clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





Popular Mobilization Forces (PMF) personnel fire artillery during clashes with Islamic State militants south of Mosul October 29, 2016. (Photo by Reuters/Stringer)





A member of Iraqi special forces police gestures during clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





Popular Mobilization Forces (PMF) personnel fire artillery during clashes with Islamic State militants south of Mosul October 29, 2016. (Photo by Reuters/Stringer)





A member of Iraqi special forces police gestures during clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





Popular Mobilization Forces (PMF) personnel fire artillery during clashes with Islamic State militants south of Mosul October 29, 2016. (Photo by Reuters/Stringer)





A member of Iraqi special forces police fires rifles during clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





A member of Iraqi special forces police takes a rest during clashes with Islamic State fighters in al-Shura, south of Mosul, Iraq October 29, 2016. (Photo by Goran Tomasevic/Reuters)





Popular Mobilization Forces (PMF) take part in an operation against Islamic State militants south of Mosul October 29, 2016. (Photo by Reuters/Stringer)





Iraqi security forces take part in an operation against Islamic State militants at the al-Shura area, south of Mosul October 29, 2016. (Photo by Reuters/Stringer)





Iraqi security forces take part in an operation against Islamic State militants at the al-Shura area, south of Mosul October 29, 2016. (Photo by Reuters/Stringer)





Popular Mobilization Forces (PMF) and Iraqi security forces take part in an operation against Islamic State militants at the al-Shura area, south of Mosul October 29, 2016. (Photo by Reuters/Stringer)





Popular Mobilization Forces (PMF) personnel fire artillery during clashes with Islamic State militants south of Mosul October 29, 2016. (Photo by Reuters/Stringer)





Iraqi priests hold the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul, Iraq, October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqi Christian soldiers attend the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





An Iraqi Christian soldier holds his weapon during the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





An Iraqi Christian soldier lights a candle during the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqi priests hold the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul, Iraq, October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





The damaged altar in the Grand Immaculate Church seen after the church was recaptured from Islamic State in Qaraqosh, near Mosul, Iraq, October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





Iraqi Christian soldiers attend the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





An Iraqi Christian police takes pictures during the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





An Iraqi Christian soldier attends the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





An Iraqi Christian police attends the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





A displaced girl waits to receive food in Qayyara, south of Mosul, Iraq October 30, 2016. (Photo by Zohra Bensemra/Reuters)





An Iraqi Christian prepares for the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. (Photo by Ahmed Jadallah/Reuters)





A tank of peshmerga forces is seen on the outskirts of Bashiqa, east of Mosul, during the operation to attack Islamic State militants in Mosul, Iraq, October 30, 2016. (Photo by Azad Lashkari/Reuters)





A military vehicle of peshmerga forces takes part in an operation against Islamic State militants on the outskirts of Bashiqa, east of Mosul, Iraq, October 30, 2016. (Photo by Azad Lashkari/Reuters)





An Iraqi soldier stands next to a detained man accused of being an Islamic State fighter at a check point in Qayyara, south of Mosul, Iraq October 30, 2016. (Photo by Zohra Bensemra/Reuters)





A member of Peshmerga forces cleans his weapon on the outskirts of Bashiqa, east of Mosul, during an operation to attack Islamic State militants in Mosul, Iraq, October 30, 2016. (Photo by Azad Lashkari/Reuters)





A military vehicle of Peshmerga forces takes part in an operation against Islamic State militants on the outskirts of Bashiqa, east of Mosul, Iraq, October 30, 2016. (Photo by Azad Lashkari/Reuters)





Peshmerga forces sleep at a military vehicle on the outskirt of Bashiqa east of Mosul, during the operation to attack Islamic State militants in Mosul, Iraq, October 30, 2016. (Photo by Azad Lashkari/Reuters)





A Shiite fighter from the Hashed al-Shaabi (Popular Mobilisation) patrols in the village of Ayn Nasir, south of Mosul, on October 29, 2016, after recapturing it from Islamic State group jihadists in an ongoing operation to retake the city of Mosul. Iraqi paramilitary forces launched an operation to cut the Islamic State group's supply lines between its Mosul bastion and neighbouring Syria, opening a new front in the nearly two-week-old offensive. (Photo by Ahmad Al-Rubaye/AFP Photo)