Actor Adam Bessa poses at the world premiere of "Mosul" at the Toronto International Film Festival (TIFF) in Toronto, Ontario, Canada September 9, 2019. REUTERS/Chris Helgren

Producer Ari Costa poses at the world premiere of "Mosul" at the Toronto International Film Festival (TIFF) in Toronto, Ontario, Canada September 9, 2019. REUTERS/Chris Helgren

Producer Ari Costa poses at the world premiere of "Mosul" at the Toronto International Film Festival (TIFF) in Toronto, Ontario, Canada September 9, 2019. REUTERS/Chris Helgren

Executive Producer Todd Makurath poses at the world premiere of "Mosul" at the Toronto International Film Festival (TIFF) in Toronto, Ontario, Canada September 9, 2019. REUTERS/Chris Helgren

Executive Producer Todd Makurath poses at the world premiere of "Mosul" at the Toronto International Film Festival (TIFF) in Toronto, Ontario, Canada September 9, 2019. REUTERS/Chris Helgren

Actor Adam Bessa poses at the world premiere of "Mosul" at the Toronto International Film Festival (TIFF) in Toronto, Ontario, Canada September 9, 2019. REUTERS/Chris Helgren

Director Matthew Michael Carnahan poses at the world premiere of "Mosul" at the Toronto International Film Festival (TIFF) in Toronto, Ontario, Canada September 9, 2019. REUTERS/Chris Helgren

People are seen at the sulfur fountain, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

General view of east of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

General view of the bridges and the Old city of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

People sit in water after being covered with mud, which helps to treat the skin diseases, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid TPX IMAGES OF THE DAY

People sit in water after being covered with sulfur, which helps to treat the skin diseases, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

General view of Bashtabiya castle, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

A man washes himself after being covered with mud, which helps to treat the skin diseases in Hammam Al-Alil south of Mosul, Iraq August 21, 2019. Picture taken August 21, 2019. REUTERS/Abdullah Rashid

A view of the rocks near the sulfur fountain on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

General view of Al-Shifa Quarter in the Old city of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

A boy pours water at a man who has been covered with mud, which help to treat the skin diseases, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

A man covers himself with mud, which helps to treat the skin diseases, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

People sit inside the sulfur fountain, which helps to treat the skin diseases, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

People sit in water at the sulfur fountain on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

A man and his son cover themselves with mud, which helps to treat the skin diseases, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

People walk toward the old castle of Bashtabia, after they finish swimming in the sulfur fountain, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

People are seen at the sulfur fountain, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

People gather during a protest against an order for the Popular Mobilisation Forces to leave checkpoints in Mosul, Iraq July 26, 2019. Picture taken July 26, 2019. REUTERS/Abdullah Rashid

People gather during a protest against an order for the Popular Mobilisation Forces to leave checkpoints in Mosul, Iraq July 26, 2019. Picture taken July 26, 2019. REUTERS/Abdullah Rashid

A girl holds a banner that reads "we are all PMF" during a protest against an order for the Popular Mobilization Forces (PMF) to leave checkpoints in Mosul, Iraq July 26, 2019. Picture taken July 26, 2019. REUTERS/Abdullah Rashid

People gather during a protest against an order for the Popular Mobilization Forces to leave checkpoints in Mosul, Iraq July 26, 2019. Picture taken July 26, 2019. REUTERS/Abdullah Rashid

Iraqi children play during the first day of Eid al-Adha celebrations in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

Iraqi children ride on a swing as they celebrate the first day of Eid al-Adha in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

Iraqi children ride on a swing as they celebrate the first day of Eid al-Adha in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

Iraqi children ride on a swing as they celebrate the first day of Eid al-Adha in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

Men slaughter cows on the first day of Eid al-Adha in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

People greet each other after attending prayers at Albasha mosque on the first day of Eid al-Adha in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

Worshippers attend the prayer at Albasha mosque on the first day of Eid al-Adha in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

People arrive to attend the prayer at Albasha mosque on the first day of Eid al-Adha in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

Worshippers attend the prayer at Albasha mosque on the first day of Eid al-Adha in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

An Iraqi police officer arrives to attend the prayer at Albasha mosque on the first day of Eid al-Adha in Mosul, Iraq August 11, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi people, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, receive aid at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Mariam (Om Salih), a displaced Iraqi woman, who returns to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, sits with her sons outside their tent at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi children, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, sit outside a tent at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

A displaced Iraqi woman, who returns to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, receives aid at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Mariam (Om Salih), a displaced Iraqi woman, who returns to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, is seen in the kitchen at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

A displaced Iraqi woman, who returns to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, shops from one of the markets at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Mariam (Om Salih), a displaced Iraqi woman, who returns to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, opens the fridge at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi women, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings,carry a jar of gas at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi people, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, are seen inside one of the markets at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi men, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, sit outside their tents at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi men, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, play billiard at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

A displaced Iraqi man, who returns to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, cuts his hair at a barber shop at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi young boys, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, play a football match at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi children, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, are seen at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi young boys, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, play football at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

Displaced Iraqi women, who return to camp after trying to go home and find the conditions in their towns unbearable, with lack of services and destroyed buildings, are seen getting out from the bazar at Hassan Sham camp, east of Mosul, Iraq July 29, 2019. Picture taken July 29, 2019. REUTERS/Abdullah Rashid

A realtor writes "for sale" on a house wall, as the city's residents struggle to live and obtain services in the old city of Mosul, Iraq June 30, 2019. Picture taken June 30, 2019. REUTERS/Abdullah Rashid

General view of the old city from the river side in Mosul, Iraq June 30, 2019. Picture taken June 30, 2019. REUTERS/Abdullah Rashid

A view of a house for sale in the old city of Mosul, Iraq June 30, 2019. Picture taken June 30, 2019. REUTERS/Abdullah Rashid

A man is seen inside a house, that's for sale due to a struggle to live and a lack of services in the old city of Mosul, Iraq June 30, 2019. Picture taken June 30, 2019. REUTERS/Abdullah Rashid

The Mukhtar of the old city solves people issues, due to a struggle to live and a lack of services in the old city of Mosul, Iraq June 30, 2019. Picture taken June 30, 2019. REUTERS/Abdullah Rashid

A man walks past a yard, that's for sale due to a struggle to live and a lack of services in the old city of Mosul, Iraq June 30, 2019. Picture taken June 30, 2019. REUTERS/Abdullah Rashid

General view of the old city from the river side in Mosul, Iraq June 30, 2019. Picture taken June 30, 2019. REUTERS/Abdullah Rashid