Tanks of Popular Mobilization Forces (PMF) are seen during the operation to attack Islamic State militants south of Mosul, Iraq, October 31, 2016. (Photo by Reuters/Stringer)





A member of Popular Mobilization Forces (PMF) rides on a military vehicle during the operation to attack Islamic State militants south of Mosul, Iraq, October 31, 2016. (Photo by Reuters/Stringer)





A man who just fled Bazwaia village carries a white flag as he arrives at a special forces checkpoint, east of Mosul, Iraq November 1, 2016. (Photo by Zohra Bensemra/Reuters)





A man who just fled Bazwaia village carries a white flag, east of Mosul, Iraq November 1, 2016. (Photo by Zohra Bensemra/Reuters)





A man, who just fled Bazwaia village, speaks with a special forces member at their checkpoint, east of Mosul, Iraq, November 1, 2016. (Photo by Zohra Bensemra/Reuters)





A man who just fled Bazwaia village carries a white flag as he rides on his donkey through a special forces checkpoint, east of Mosul, Iraq November 1, 2016. (Photo by Zohra Bensemra/Reuters)





Special forces members keep watch on the outskirts of Bazwaia, east of Mosul, Iraq November 1, 2016. (Photo by Zohra Bensemra/Reuters)





A woman who just fled Bazwaia village speaks with a special forces member at their checkpoint, east of Mosul, Iraq, November 1, 2016. (Photo by Zohra Bensemra/Reuters)





A man who just fled Bazwaia village carries a white flag as he arrives at a special forces checkpoint, east of Mosul, Iraq, November 1, 2016. (Photo by Zohra Bensemra/Reuters)





A displaced Iraqi family sits at the back of a vehicle after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





A displaced Iraqi boy leads his animals to safety after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





A displaced Iraqi woman walks away after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





Displaced Iraqis displaced flee with their livestock near a berm after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





A displaced Iraqi boy leads his animals to safety after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





Displaced Iraqi families are pictured after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





A displaced Iraqi flees after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





A displaced Iraqi boy is pictured after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





Displaced Iraqi families are pictured after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





A displaced elderly Iraqi woman walks after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





Displaced Iraqis flee after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





A displaced Iraqi family flees after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





A displaced Iraqi family flees after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





Smoke rises from oil wells, set ablaze by Islamic State militants before fleeing the oil-producing region of Qayyara, Iraq, November 1, 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, November 1, 2016. (Photo by Alaa Al-Marjani/Reuters)





Girls walk as smoke rises from oil wells, set ablaze by Islamic State militants before IS militants fled the oil-producing region of Qayyara, Iraq, November 1, 2016. (Photo by Alaa Al-Marjani/Reuters)





Displaced Iraqis flee after escaping from Islamic State controlled village of Abu Jarboa during clashes with IS militants near Mosul, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





A man who just fled Bazwaia village is seen carrying a white flag as he is questioned by special forces members after he arrived at their checkpoint, east of Mosul, Iraq November 1, 2016. (Photo by Zohra Bensemra/Reuters)





A Kurdish Peshmerga fighter looks over Mosul from his position near Abu Jarboa village, Iraq November 1, 2016. (Photo by Ahmed Jadallah/Reuters)





Smoke rises from oil wells, set ablaze by Islamic State militants before fleeing the oil-producing region of Qayyara, Iraq, November 1, 2016. (Photo by Alaa Al-Marjani/Reuters)