A Yazidi woman who joined the Kurdish Peshmerga forces walks in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

ATTENTION EDITORS - VISUALS COVERAGE OF SCENES OF DEATH OR INJURY A Yazidi man is injured from a bomb attack in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

A Yazidi woman who joined the Kurdish Peshmerga forces walks in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

A Yazidi woman who joined the Kurdish Peshmerga forces looks at a temple destroyed by the Islamic State militants in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

A Yazidi woman who joined the Kurdish Peshmerga forces inspects a temple destroyed by the Islamic State militants in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

A Yazidi man inspects a temple destroyed by the Islamic State militants in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

A Yazidi woman who joined the Kurdish Peshmerga forces looks at a temple destroyed by the Islamic State militants in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

Yazidi men with Peshmerga forces walk in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

AÊYazidi man inspects a house in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

A Yazidi woman who joined the Kurdish Peshmerga forces sits next to rifles in the town of Bashiqa, after it was recaptured from the Islamic State, east of Mosul, Iraq November 10, 2016. REUTERS/Alaa Al-Marjani 

Yazidi people in vehicles loot the area of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

Yazidi people in vehicles loot the area of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

Volunteers from the Yazidi sect who have joined the Kurdish peshmerga forces with Yazidi people loot houses in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

Volunteers from the Yazidi sect who have joined the Kurdish peshmerga forces stand during Yazidi people loot houses the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

A volunteer from the Yazidi sect who have joined the Kurdish peshmerga forces stand after Yazidi people loot houses in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

A volunteer from the Yazidi sect who have joined the Kurdish peshmerga forces poses for a photograph in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

Yazidi people loot the houses in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

A burnt mosque by Yazidi people is seen in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

A volunteer from the Yazidi sect who have joined the Kurdish peshmerga forces poses for a photograph in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

Yazidi people loot the houses in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

An elderly Yazidi man poses for a photograph in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

A volunteer from the Yazidi sect who have joined the Kurdish peshmerga forces walks after Yazidi people loot houses with vehicles in Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

A volunteer from the Yazidi sect who have joined the Kurdish peshmerga forces walks with his weapon in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

Yazidi people in vehicles loot the area of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

Yazidi people in vehicles loot the area of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari 

A volunteer from the Yazidi sect who have joined the Kurdish peshmerga forces stand in the street in the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November November 16 2015. REUTERS/Azad Lashkari 

Volunteers from the Yazidi sect who have joined the Kurdish peshmerga forces stand during Yazidi people loot houses the town of Sinjar, Iraq November 16, 2015. Before it was overrun by Islamic State, Sinjar and the surrounding villages were home to about 200,000 people, mainly Kurdish and Arab Muslims - both Sunni and Shi'ite - as well as Christians and Yazidis, a faith that combines elements of several ancient Middle Eastern religions. Now the town is largely deserted. But in a row of houses used by Islamic State fighters, there were signs of recent occupation: a smell of rotting food, and foam mattresses and pillows laid on the floor. Picture taken November 16 2015. REUTERS/Azad Lashkari TPX IMAGES OF THE DAY

Members of the minority Yazidi sect who were newly released hug each other on the outskirts of Kirkuk April 8, 2015. More than 200 elderly and infirm Yazidis were freed on Wednesday by Islamic State militants who had been holding them captive since overruning their villages in northwestern Iraq last summer. REUTERS/Ako Rasheed TPX IMAGES OF THE DAY

Ilham, a Yazidi woman, folds the curtain of the tent where she lives in a refugee camp near Duhok February 26, 2015. Reuters photographer Asmaa Waguih: Ilham was kidnapped by Islamic State in August last year and was transported to Tal Afar along with other girls and women. She was raped several times by one of the militants. When Ilham tried to escape, some people she asked for help handed her back to the militants. She managed to get away a few weeks later. At refugee camps in northern Iraq I met and photographed Yazidi women who had survived being kidnapped by Islamic State. I needed government approval to visit some of the camps. The camp officials wanted to protect the women and were wary of the fact that I had a camera. It took a while for the women to get used to me. But when they did, they were happy to share their stories, to tell me what had happened to them. It is very difficult for women living in a quiet, conservative area to admit they have faced sexual violence. In some cases, I heard from camp officials that a woman had been raped, but when I met her she would speak of the brutality of the militants and then mention knowing that some women had even been raped. In general, escapees would try to find a time when the militants were busy working and then seek help. Sometimes people would agree to hide them and then find cars to take them to other areas. At other times they would return the women to Islamic State. Some had managed to escape in groups. Others had family members still being held by the insurgents. It?s a disastrous situation for these families ? and it?s not over yet. REUTERS/Asmaa Waguih 

A Yazidi refugee girl washes her tent at Sharya refugee camp on the outskirts of Duhok, March 4, 2015. REUTERS/Asmaa Waguih (IRAQ - Tags: POLITICS CIVIL UNREST CONFLICT SOCIETY) 

Yazidi refugees play chess at Sharya refugee camp on the outskirts of Duhok March 4, 2015. REUTERS/Asmaa Waguih (IRAQ - Tags: POLITICS CIVIL UNREST CONFLICT) 

A relative of a Peshmerga fighter killed in a suicide attack in Sinjar province, mourns after a burial ceremony at Mazar Sharaf Eldin, a sacred and a cemetery area for the Yazidi minority, north of Sinjar, March 2, 2015. A number of Peshmerga were killed and others injured after two suicide car bombs attacks targeted a building the Peshmerga were using for fighting, according to Peshmerga officials. REUTERS/Asmaa Waguih (IRAQ - Tags: POLITICS CONFLICT CIVIL UNREST MILITARY OBITUARY TPX IMAGES OF THE DAY) 

Kurdish Yazidis, relatives of a Peshmerga fighter killed in a suicide attack in Sinjar province, mourn with another relative, also member of the Peshmerga, before the burial ceremony at Mazar Sharaf Eldin, a sacred and cemetery area for the Yazidi minority, north of Sinjar, March 2, 2015. A number of Peshmerga were killed and others injured after two suicide car bombs attacks targeted a building the Peshmerga were using for fighting, according to Peshmerga officials. REUTERS/Asmaa Waguih (IRAQ - Tags: CONFLICT POLITICS CIVIL UNREST MILITARY TPX IMAGES OF THE DAY) 

A Yazidi man kisses the ground of a Yazidi temple in Lalish, Sheikhan province, Kurdistan, northern Iraq, February 28, 2015. Tens of thousands of the Yazidi minority sect in Iraq have been displaced after attacks by the Islamic State militant group since last August. Picture taken February 28, 2015. REUTERS/Asmaa Waguih (IRAQ - Tags: RELIGION) 

Yazidi refugees sell chickens at a refugee camp on the outskirts of Duhok, February 28, 2015. Picture taken February 28, 2015. REUTERS/Asmaa Waguih (IRAQ - Tags: CIVIL UNREST CONFLICT SOCIETY IMMIGRATION ANIMALS) 

Yazidi refugee children play a game of pool at a refugee camp on the outskirts of Duhok, February 28, 2015. Picture taken February 28, 2015. REUTERS/Asmaa Waguih (IRAQ - Tags: CIVIL UNREST CONFLICT SOCIETY IMMIGRATION) 

A Yazidi refugee gets a hair cut in a tent used as a barber's, at a refugee camp on the outskirts of Duhok, February 28, 2015. Picture taken February 28, 2015. REUTERS/Asmaa Waguih (IRAQ - Tags: CIVIL UNREST CONFLICT SOCIETY IMMIGRATION) 

Yazidi refugees talk on a hill overlooking their refugee camp on the outskirts of Duhok, February 26, 2015. REUTERS/Asmaa Waguih (IRAQ - Tags: POLITICS SOCIETY IMMIGRATION) 

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF DEATH
Human skulls are seen in a mass grave on the outskirts of the town of Sinjar, February 3, 2015. Police said the mass grave contained remains from 25 people belonging to the minority Yazidi sect, apparent victims of killings by Islamic State militants. REUTERS/Ari Jalal (IRAQ - Tags: CIVIL UNREST CONFLICT) 

Kurdish security forces help people from the minority Yazidi sect, on the outskirts of Kirkuk January 17, 2015. Islamic State freed around 350 members of Iraq's Yazidi minority on Saturday, delivering them to safety in the country's Kurdish north. REUTERS/Ako Rasheed (IRAQ - Tags: POLITICS MILITARY CIVIL UNREST CONFLICT) 

People from the minority Yazidi sect, wait inside a truck along a road on the outskirts of Kirkuk January 17, 2015. Islamic State freed around 350 members of Iraq's Yazidi minority on Saturday, delivering them to safety in the country's Kurdish north. REUTERS/Ako Rasheed (IRAQ - Tags: POLITICS MILITARY CIVIL UNREST CONFLICT TPX IMAGES OF THE DAY) 

A displaced Iraqi boy from the minority Yazidi sect, fleeing violence in the Iraqi town of Sinjar west of Mosul, plays with snow at a camp on the outskirts of Dohuk province January 8, 2015. REUTERS/Ari Jalal (IRAQ - Tags: CIVIL UNREST POLITICS CONFLICT ENVIRONMENT) 

People from the minority Yazidi sect stand guard near Yezidi temple Sharaf al-Din at Mount Sinjar, in the town of Sinjar, December 20, 2014. Iraqi Kurdish fighters flashed victory signs as they swept across the northern side of Sinjar mountain on Saturday, two days after breaking through to free hundreds of Yazidis trapped there for months by Islamic State fighters. REUTERS/Ari Jalal (IRAQ - Tags: POLITICS CIVIL UNREST MILITARY) 

Yezidi temple Sharaf al-Din is seen at Mount Sinjar, in the town of Sinjar, December 20, 2014. Iraqi Kurdish fighters flashed victory signs as they swept across the northern side of Sinjar mountain on Saturday, two days after breaking through to free hundreds of Yazidis trapped there for months by Islamic State fighters. REUTERS/Ari Jalal (IRAQ - Tags: POLITICS CIVIL UNREST MILITARY) 

People from the minority Yazidi sect pass a destroyed military vehicle belonging to Islamic State militant at Mount Sinjar, in the town of Sinjar, December 21, 2014. Iraqi Kurdish fighters flashed victory signs as they swept across the northern side of Sinjar mountain on Saturday, two days after breaking through to free hundreds of Yazidis trapped there for months by Islamic State fighters. REUTERS/Ari Jalal (IRAQ - Tags: POLITICS CIVIL UNREST MILITARY TPX IMAGES OF THE DAY) 

A refugee from the minority Yazidi sect wraps himself with a blanket as he stands on a muddy path during wintry weather at Nowruz refugee camp in Qamishli, northeastern Syria December 14, 2014. Picture taken December 14, 2014. REUTERS/Massoud Mohammed (SYRIA - Tags: POLITICS CONFLICT CIVIL UNREST SOCIETY IMMIGRATION ENVIRONMENT TPX IMAGES OF THE DAY) 

Displaced Iraqi people from the minority Yazidi sect, fleeing violence in the Iraqi town of Sinjar west of Mosul, walk at the Qadia camp on the outskirts of Dohuk province December 7, 2014. REUTERS/Ari Jalal (IRAQ - Tags: CONFLICT SOCIETY IMMIGRATION) 

Displaced boys from the minority Yazidi sect, fleeing violence in the Iraqi town of Sinjar west of Mosul, play soccer at the Khanki camp on the outskirts of Dohuk province, November 29, 2014. REUTERS/Ari Jalal (IRAQ - Tags: SOCIETY CONFLICT) 

A displaced woman from the minority Yazidi sect, who fled violence in the Iraqi town of Sinjar, worships at their main holy temple in Lalish in Shikhan September 20, 2014. Followers of an ancient religion derived from Zoroastrianism, the Yazidi fled their homeland in the Sinjar mountains as Islamic State militants, who see them as devil worshippers, seized towns and carried out mass killings in August. REUTERS/Ahmed Jadallah (IRAQ - Tags: CIVIL UNREST CONFLICT RELIGION) 

A displaced girl from the minority Yazidi sect, who fled violence in the Iraqi town of Sinjar, worships at their main holy temple Lalish in Shikhan September 20, 2014. Followers of an ancient religion derived from Zoroastrianism, the Yazidi fled their homeland in the Sinjar mountains as Islamic State militants, who see them as devil worshippers, seized towns and carried out mass killings in August. REUTERS/Ahmed Jadallah (IRAQ - Tags: CIVIL UNREST CONFLICT RELIGION) 

Displaced people from the minority Yazidi sect, who fled violence in the Iraqi town of Sinjar, fill jerry cans with water at Bajed Kadal refugee camp southwest of Dohuk September 15, 2014. The camp is for the REUTERS/Ahmed Jadallah (IRAQ - Tags: CIVIL UNREST CONFLICT) 

Displaced people from the minority Yazidi sect, fleeing violence in the Iraqi town of Sinjar west of Mosul, line up to receive food at the khanki camp on the outskirts of Dohuk province, September 13, 2014. REUTERS/Ari Jalal (IRAQ - Tags - - Tags: CIVIL UNREST CONFLICT SOCIETY TPX IMAGES OF THE DAY) FOR BEST QUALITY IMAGE ALSO SEE: GF2EA9Q0KPG01 

Displaced people from the minority Yazidi sect, who fled violence in the Iraqi town of Sinjar, are seen as they prepare tea for breakfast at Bajed Kadal refugee camp, southwest of Dohuk province, August 23, 2014. REUTERS/Youssef Boudlal (IRAQ - Tags: POLITICS CONFLICT) 

A woman looks on as she sits amongst displaced people from the minority Yazidi sect, who fled violence in the Iraqi town of Sinjar, who are sleeping on the ground at Bajed Kadal refugee camp, southwest of Dohuk province August 23, 2014. REUTERS/Youssef Boudlal (IRAQ - Tags: CIVIL UNREST POLITICS CONFLICT) 

Children from the minority Yazidi sect, who fled violence in the Iraqi town of Sinjar, wait for food by a fire in Bajed Kadal refugee camp, southwest of Dohuk province August 22, 2014. REUTERS/Youssef Boudlal (IRAQ - Tags: CIVIL UNREST POLITICS CONFLICT TPX IMAGES OF THE DAY FOOD SOCIETY) 

A refugee woman from the minority Yazidi sect, who fled the violence in the Iraqi town of Sinjar, sits with a child inside a tent at Nowruz refugee camp in Qamishli, northeastern Syria August 17, 2014. Proclaiming a caliphate straddling parts of Iraq and Syria, Islamic State militants have swept across northern Iraq, pushing back Kurdish regional forces and driving tens of thousands of Christians and members of the Yazidi religious minority from their homes. Picture taken August 17, 2014. REUTERS/Rodi Said (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)