syria

A fighter from the Jaish al-Islam (Islam Army) runs to avoid sniper fire, in the village of Tal al-Siwan area of the rebel-held stronghold of Douma, on the outskirts of Damascus, on September 5, 2016. / AFP PHOTO / Sameer Al-DoumySAMEER AL-DOUMY/AFP/Getty Images

Sameer Al-Doumy/AFP/Getty

A fighter from the Jaish al-Islam (Islam Army) runs to avoid sniper fire, in the village of Tal al-Siwan area of the rebel-held stronghold of Douma, on the outskirts of Damascus, Syria 

A man fills barrels with rubble to make a barricade to protect shops in the rebel held Douma neighbourhood of Damascus, Syria

Bassam Khabieh/Reuters

A man fills barrels with rubble to make a barricade to protect shops in the rebel held Douma neighbourhood of Damascus, Syria 

A young boy pushes a wheelbarrow with wood next to a young girl on September 1, 2016  the Turkish-Syrian border town of Karkamis, in the southern region of Gaziantep, near Syrian-Turkish border town of Jarabulus

Bulent Kilic/AFP/Getty

A young boy pushes a wheelbarrow with wood next to a young girl on the Turkish-Syrian border town of Karkamis, in the southern region of Gaziantep, near Syrian-Turkish border town of Jarabulus

A fighter from the Jund al-Aqsa Islamist Brigade, raises an Islamist flag after taking control of the northern Syrian town of Tayyibat al-Imam, northwest of Hama from Syrian government forces

OmarHaj Kadour/AFP/Getty

A fighter from the Jund al-Aqsa Islamist Brigade, raises an Islamist flag after taking control of the northern Syrian town of Tayyibat al-Imam, northwest of Hama from Syrian government forces

Syrian army soldiers rest in a street in the government-controlled part of the besieged town of Daraya on August 26, 2016, as thousands of rebel fighters and civilians prepared to evacuate under an accord struck a day earlier.  An estimated 8,000 people remain in the town, despite a government siege lasting four years and regular regime bombardment.    / AFP PHOTO / Youssef KARWASHANYOUSSEF KARWASHAN/AFP/Getty Images

Youssef Karwashan/AFP/Getty

Syrian army soldiers rest in a street in the government-controlled part of the besieged town of Daraya as thousands of rebel fighters and civilians prepared to evacuate under an accord struck a day earlier 

This picture taken around 5 kilometres west from the Turkish Syrian border city of Karkamis in the southern region of Gaziantep, on August 25, 2016 shows a boy looking on as Turkish Army tanks drive to the Syrian Turkish border town of Jarabulus. Turkey's army backed by international coalition air strikes launched an operation involving fighter jets and elite ground troops to drive Islamic State jihadists out of a key Syrian border town. The air and ground operation, the most ambitious launched by Turkey in the Syria conflict, is aimed at clearing jihadists from the town of Jarabulus, which lies directly opposite the Turkish town of Karkamis. / AFP PHOTO / BULENT KILICBULENT KILIC/AFP/Getty Images

Bulent Kilic/AFP

This picture taken around 5 kilometres west from the Turkish Syrian border city of Karkamis in the southern region of Gaziantep shows a boy looking on as Turkish Army tanks drive to the Syrian Turkish border town of Jarabulus 

A Turkish army tank drives towards Syria in the Turkish border city of Karkamis, in the southern region of Gaziantep on August 24, 2016. Turkey's army backed by international coalition air strikes launched an operation involving fighter jets and elite ground troops to drive Islamic State jihadists out of a key Syrian border town. / AFP PHOTO / BULENT KILICBULENT KILIC/AFP/Getty Images

Bulent Kilic/AFP/Getty

A Turkish army tank drives towards Syria in the Turkish border city of Karkamis, in the southern region of Gaziantep. Turkey’s army backed by international coalition air strikes launched an operation involving fighter jets and elite ground troops to drive Islamic State jihadists out of a key Syrian border town 

A member of the Kurdish police known as the Asayesh, observes enemy positions from a lookout point in the northeastern Syrian city of Hasakeh during ongoing fighting with regime forces on August 22, 2016. Fierce overnight clashes with regime forces allowed the Kurds to advance mostly in the south of the city, the Syrian Observatory for Human Rights said.   / AFP PHOTO / DELIL SOULEIMANDELIL SOULEIMAN/AFP/Getty Images

Delil Souleiman/AFP/Getty

A member of the Kurdish police known as the Asayesh, observes enemy positions from a lookout point in the northeastern Syrian city of Hasakeh during ongoing fighting with regime forces 

A man stands amid the damage after an airstrike in the rebel held Douma neighbourhood of Damascus, Syria August 22, 2016. REUTERS/Bassam Khabieh

Bassam Khabieh/Reuters

A man stands amid the damage after an airstrike in the rebel held Douma neighbourhood of Damascus, Syria 

A still image taken on August 18, 2016 from a video posted on social media said to be shot in Aleppo on August 17, 2016, shows a boy with bloodied face sitting in an ambulance, after an airstrike, Syria

Social media/Reuters

A still image taken from a video posted on social media said to be shot in Aleppo on shows a boy with bloodied face sitting in an ambulance, after an airstrike, Syria

Free Syrian Army fighters rest inside a mechanic shop in Ramousah area southwest of Aleppo, Syria

Abdalrhman Ismail/Reuters

Free Syrian Army fighters rest inside a mechanic shop in Ramousah area southwest of Aleppo, Syria

Men inspect the wreckage of a Russian helicopter that had been shot down in the north of Syria's rebel-held Idlib province, Syria August 1, 2016. REUTERS/Ammar Abdullah

Ammar Abdullah/Reuters

Men inspect the wreckage of a Russian helicopter that had been shot down in the north of Syria’s rebel-held Idlib province, Syria 

Fighters from Jaish al-Izzah, part of the Free Syrian Army, demonstrate their skills during a military display as part of a graduation ceremony at a camp in the Hama province, Syria  July 29, 2016. REUTERS/Ammar Abdullah

Ammar Abdullah/Reuters

Fighters from Jaish al-Izzah, part of the Free Syrian Army, demonstrate their skills during a military display as part of a graduation ceremony at a camp in the Hama province, Syria 

People gather at a site hit by airstrikes in the rebel held town of Atareb in Aleppo province

Ammar Abdullah/Reuters

People gather at a site hit by airstrikes in the rebel held town of Atareb in Aleppo province, Syria

Syrian civilians are seen following a reported air strike by Syrian government forces on the rebel-held northwestern city of Idlib, on July 20, 2016

Omar Haj Kadour/AFP/Getty

Syrian civilians are seen following a reported air strike by Syrian government forces on the rebel-held northwestern city of Idlib, on July 20, 2016

Syrians look at the damage in a street in the ancient Syriac Quarter of the regime-held area of the northern Syrian city of Aleppo following rocket attacks by rebels on July 11, 2016.  Syrian opposition fighters launched a major assault on government-held districts of Aleppo city after the regime severed their only remaining supply route into the city, an AFP correspondent said.   / AFP PHOTO / GEORGE OURFALIANGEORGE OURFALIAN/AFP/Getty Images

George Ourfalian/AFP/Getty

Syrians look at the damage in a street in the ancient Syriac Quarter of the regime-held area of the northern Syrian city of Aleppo following rocket attacks by rebels. Syrian opposition fighters launched a major assault on government-held districts of Aleppo city after the regime severed their only remaining supply route into the city

Syrian children run amidst heavily damaged buildings during an activity organised by a charity group in Jobar, a rebel-held district on the eastern outskirts of the capital Damascus

Amer Almohibany/AFP

Syrian children run amidst heavily damaged buildings during an activity organised by a charity group in Jobar, a rebel-held district on the eastern outskirts of the capital Damascus

A farmer harvests wheat in a field at night, fearing shelling in daylight, in the rebel held besieged town of Douma, eastern Ghouta in Damascus, Syria early morning June 24, 2016. REUTERS/Bassam Khabieh

Bassam Khabieh/Reuters

A farmer harvests wheat in a field at night, fearing shelling in daylight, in the rebel held besieged town of Douma, eastern Ghouta in Damascus, Syria 

Damaged buildings are pictured at night in Idlib city, Syria June 8, 2016. REUTERS/Ammar Abdullah

Ammar Abdullah/Reuters

Damaged buildings are pictured at night in Idlib city, Syria 

A handout picture released by the official Syrian Arab News Agency (SANA) on June 7, 2016 shows Syrian President Bashar al-Assad waving before addressing the new parliament in Damascus. Assad addressed the new parliament in a speech broadcast on state television congratulating lawmakers on a record turnout in an April general election. Assad's last address to parliament was in June 2012, just after general elections in May of that year. / AFP PHOTO / SANA / HO / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / HO / SANA" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTSHO/AFP/Getty Images

AFP/Getty

Syrian President Bashar al-Assad waves before addressing the new parliament in Damascus