Women shop ahead of the Muslim festival of Eid-al-Adha in Aleppo, Syria September 23, 2015. (Photo by Hamid Khatib/Reuters)





Children play on swings on the first day of Eid al-Adha in Maaret al-Naaman town in Idlib province, Syria September 24, 2015. (Photo by Khalil Ashawi/Reuters)





Children play at a makeshift playground during the Muslim festival of Eid-al-Adha in Idlib city, Syria September 24, 2015. (Photo by Ammar Abdullah/Reuters)





Children play at a makeshift playground during the Muslim festival of Eid-al-Adha in Idlib city, Syria September 24, 2015. (Photo by Ammar Abdullah/Reuters)





A boy gestures near stalls where fish and chicks are displayed for sale during the Muslim festival of Eid-al-Adha in Idlib city, Syria September 24, 2015. (Photo by Ammar Abdullah/Reuters)





Free Syria Army fighters ride a bus in Aleppo, Syria October 2, 2015. (Photo by Abdalrhman Ismail/Reuters)





A street vendor sells produce along a street in Aleppo's Bustan al-Qasr neighborhood, Syria October 14, 2015. (Photo by Hosam Katan/Reuters)





A street vendor sells tamarind syrup on the outskirts of Kafruma village in the southern countryside of Idlib, Syria October 19, 2015. (Photo by Khalil Ashawi/Reuters)





Men play chess in front of a damaged building in the rebel-controlled area of Maaret al-Naaman town in Idlib province, Syria October 19, 2015. (Photo by Khalil Ashawi/Reuters)





A man walks past a damaged water tank in Deir Sharqi village in Idlib Governorate, Syria October 19, 2015. (Photo by Khalil Ashawi/Reuters)





Syrians who fled recent fightings in their area rest in the southern countryside of Aleppo, Syria October 21, 2015. (Photo by Hosam Katan/Reuters)





Civilians fleeing the recent fightings in their area sit at the back of a pickup truck with their belongings in the southern countryside of Aleppo, Syria October 21, 2015. (Photo by Hosam Katan/Reuters)





A man sits surrounded by displaced Syrian children who fled the violence in Abteen village, outside a house in Mraykes village in the southern countryside of Aleppo, Syria October 21, 2015. (Photo by Hosam Katan/Reuters)





Students play during their break inside Hosam Kamel school in the rebel-controlled area of Maaret al-Numan town in Idlib province, Syria October 28, 2015. (Photo by Khalil Ashawi/Reuters)





A woman walks past a man riding a scooter in the rain in the rebel-controlled area of Maaret al-Numan town in Idlib province, Syria October 28, 2015. (Photo by Khalil Ashawi/Reuters)





Children play on a bicycle near damaged buildings in the town of Douma, eastern Ghouta in Damascus November 5, 2015. (Photo by Bassam Khabieh/Reuters)





Children walk near rubble in the town of Douma, eastern Ghouta in Damascus November 5, 2015. (Photo by Bassam Khabieh/Reuters)





A man makes bread in the town of Douma, eastern Ghouta in Damascus November 5, 2015. (Photo by Bassam Khabieh/Reuters)





Street vendors sit on a pick-up truck as they sell diesel and gasoline in the rebel-controlled city of Idlib, Syria November 7, 2015. (Photo by Ammar Abdullah/Reuters)





A clothing shop displays its merchandise in the rebel-controlled city of Idlib, Syria November 7, 2015. (Photo by Ammar Abdullah/Reuters)





A boy sits near containers of gasoline and kerosene for sale in the rebel-controlled city of Idlib, Syria November 7, 2015. (Photo by Ammar Abdullah/Reuters)





An artisan blows air in a piece of melted glass at a factory that recycles glass in Idlib countryside, Syria November 9, 2015. (Photo by Ammar Abdullah/Reuters)





An artisan boy casts heated glass at a factory that recycles glass in Idlib countryside, Syria November 9, 2015. (Photo by Ammar Abdullah/Reuters)





An artisan casts heated glass at a factory that recycles glass in Idlib countryside, Syria November 9, 2015. (Photo by Ammar Abdullah/Reuters)





Children rest near produce displayed for sale in the town of Douma, eastern Ghouta in Damascus, Syria November 17, 2015. (Photo by Bassam Khabieh/Reuters)





A boy fills a container with water in the town of Douma, eastern Ghouta in Damascus, Syria November 17, 2015. (Photo by Bassam Khabieh/Reuters)





A child rests inside a stroller filled with cartons collected to use for heating in the town of Douma, eastern Ghouta in Damascus, Syria November 17, 2015. (Photo by Bassam Khabieh/Reuters)





Residents ride a motorbike near rubble of damaged buildings in the town of Douma, eastern Ghouta in Damascus, Syria November 17, 2015. (Photo by Bassam Khabieh/Reuters)





A man rides a bicycle near rubble of damaged buildings in the town of Douma, eastern Ghouta in Damascus, Syria November 17, 2015. (Photo by Bassam Khabieh/Reuters)





A boy inspects a firewood in the town of Douma, eastern Ghouta in Damascus, Syria January 5, 2016. Picture taken January 5, 2016. (Photo by Bassam Khabieh/Reuters)





A man prepares firewood in the town of Douma, eastern Ghouta in Damascus, Syria January 5, 2016. Picture taken January 5, 2016. (Photo by Bassam Khabieh/Reuters)





Children play near damaged buildings in the town of Douma, eastern Ghouta in Damascus, Syria January 5, 2016. Picture taken January 5, 2016. (Photo by Bassam Khabieh/Reuters)





Mujahideen Horan brigade fighters, part of the Free Syrian Army, launch a shell from their tank towards forces loyal to Syria's President Bashar al-Assad located in Deraa, Syria, in what they said was a battle to pressure breaking the siege off Madaya, January 11, 2016. (Photo by Alaa Al-Faqir/Reuters)





Mujahideen Horan brigade fighters, part of the Free Syrian Army, react as they launch a shell towards forces loyal to Syria's President Bashar al-Assad located in Deraa, Syria, in what they said was a battle to pressure breaking the siege off Madaya, January 11, 2016. (Photo by Alaa Al-Faqir/Reuters)





Mujahideen Horan brigade fighters, part of the Free Syrian Army, prepare shells before launching them towards forces loyal to Syria's President Bashar al-Assad located in Deraa, Syria, in what they said was a battle to pressure breaking the siege off Madaya, January 11, 2016. (Photo by Alaa Al-Faqir/Reuters)





A Mujahideen Horan brigade fighter, part of the Free Syrian Army, prepares a weapon before firing towards forces loyal to Syria's President Bashar al-Assad located in Deraa, Syria, in what they said was a battle to pressure breaking the siege off Madaya, January 11, 2016. (Photo by Alaa Al-Faqir/Reuters)





Mujahideen Horan brigade fighters, part of the Free Syrian Army, stand near their tank before firing towards forces loyal to Syria's President Bashar al-Assad located in Deraa, Syria, in what they said was a battle to pressure breaking the siege off Madaya, January 11, 2016. (Photo by Alaa Al-Faqir/Reuters)





Mujahideen Horan brigade fighters, part of the Free Syrian Army, prepare a weapon before firing towards forces loyal to Syria's President Bashar al-Assad located in Deraa, Syria, in what they said was a battle to pressure breaking the siege off Madaya, January 11, 2016. (Photo by Alaa Al-Faqir/Reuters)





Mujahideen Horan brigade fighters, part of the Free Syrian Army, react as they launch a shell towards forces loyal to Syria's President Bashar al-Assad located in Deraa, Syria, in what they said was a battle to pressure breaking the siege off Madaya, January 11, 2016. (Photo by Alaa Al-Faqir/Reuters)





A boy inspects his school, damaged in what activists said was an air strike carried out yesterday by the Russian air force in Injara town, Aleppo countryside, Syria January 12, 2016. (Photo by Khalil Ashawi/Reuters)





A boy inspects damage inside his school, due to what activists said was an air strike carried out yesterday by the Russian air force in Injara town, Aleppo countryside, Syria January 12, 2016. (Photo by Khalil Ashawi/Reuters)





An internally displaced girl stands inside a refugee camp in Salkeen, Northern Idlib countryside, Syria, January 17, 2016. (Photo by Ammar Abdullah/Reuters)





Free Syrian Army fighters prepare shells before firing them towards Islamic State fighters in the northern Aleppo countryside, Syria, January 18, 2016. (Photo by Abdelrahmin Ismail/Reuters)





A Free Syrian Army fighter stands guard with his weapon on a lookout point in the northern Aleppo countryside, Syria, January 18, 2016. (Photo by Abdelrahmin Ismail/Reuters)





A Free Syrian Army fighter places a shell before firing it towards Islamic State fighters in the northern Aleppo countryside, Syria, January 18, 2016. (Photo by Abdelrahmin Ismail/Reuters)





Free Syrian Army fighter fires a shell towards Islamic State fighters in the northern Aleppo countryside, Syria, January 18, 2016. (Photo by Abdelrahmin Ismail/Reuters)





Bicycles are parked near rubble from damaged buildings in Aleppo's eastern district of Tariq al-Bab, Syria January 19, 2016. Picture taken January 19, 2016. (Photo by Abdelrahmin Ismail/Reuters)





Residents push a cart near al-Shaar bridge in Aleppo's al-Shaar neighborhood, Syria, January 19, 2016. Picture taken January 19, 2016. (Photo by Abdelrahmin Ismail/Reuters)





A boy fills containers with water from one of the water tanks that were placed and supervised by the Syrian Arab Red Crescent and other humanitarian organisations in Aleppo, Syria January 22, 2016. (Photo by Abdalrhman Ismail/Reuters)





A man cooks a meal using firewood in Aleppo, Syria January 22, 2016. (Photo by Abdalrhman Ismail/Reuters)