A woman holds the bodies of two children as they lay on a surgical table at a makeshift hospital following reported shelling by government forces in the rebel-held area of Daraa, in southern Syria, on December 11, 2016. (Photo by Mohamad Abazeed/AFP Photo)





Rebel fighters carry their weapons in a rebel-held area of Aleppo, Syria December 8, 2016. (Photo by Abdalrhman Ismail/Reuters)





Rebel fighters carry their weapons as they pose in a rebel-held area of Aleppo, Syria December 8, 2016. (Photo by Abdalrhman Ismail/Reuters)





Rebel fighters carry their weapons in a rebel-held area of Aleppo, Syria December 8, 2016. (Photo by Abdalrhman Ismail/Reuters)





Rebel fighters carry their weapons as they pose in a rebel-held area of Aleppo, Syria December 8, 2016. (Photo by Abdalrhman Ismail/Reuters)





Civilians collect tree branches to be used for heating in a rebel-held area of Aleppo, Syria December 8, 2016. (Photo by Abdalrhman Ismail/Reuters)





Civil Defence members stand along a street in a rebel-held area of Aleppo, Syria December 8, 2016. (Photo by Abdalrhman Ismail/Reuters)





A Civil Defence member rolls a cigarette in a rebel-held area of Aleppo, Syria December 8, 2016. (Photo by Abdalrhman Ismail/Reuters)





Forces loyal to Syria's President Bashar al-Assad stand near a tank in a government held area of Aleppo, Syria, in this handout picture provided by SANA on December 8, 2016. (Photo by Reuters/SANA)





People warm themselves around a fire in a rebel-held area of Aleppo, Syria December 8, 2016. (Photo by Abdalrhman Ismail/Reuters)





Forces loyal to Syria's President carry their weapons as they walk in a government held area of Aleppo, Syria December 9, 2016. (Photo by Omar Sanadiki/Reuters)





People, who evacuated the eastern districts of Aleppo, stand with their belongings in a government held area of Aleppo, Syria December 9, 2016. (Photo by Omar Sanadiki/Reuters)





People, who evacuated the eastern districts of Aleppo, wait in a government held area of Aleppo, Syria December 9, 2016. (Photo by Omar Sanadiki/Reuters)





A cat is seen walking amid the debris in a government held area of Aleppo, Syria December 9, 2016. (Photo by Omar Sanadiki/Reuters)





People, who evacuated the eastern districts of Aleppo, carry their belongings as they walk in a government held area of Aleppo, Syria December 9, 2016. (Photo by Omar Sanadiki/Reuters)





Civilians sit inside a damaged house in a government held area of Aleppo, Syria December 9, 2016. (Photo by Omar Sanadiki/Reuters)





Forces loyal to Syria's President Bashar al-Assad walk along a street in a government held area of Aleppo, Syria December 9, 2016. (Photo by Omar Sanadiki/Reuters)





Forces loyal to Syria's President Bashar al-Assad sit in front of damaged shops in a government held area of Aleppo, Syria December 9, 2016. (Photo by Omar Sanadiki/Reuters)





A member of Forces loyal to Syria's President Bashar al-Asaad is seen atop of an armoured vehicle in a government held area of Aleppo, Syria December 9, 2016. (Photo by Omar Sanadiki/Reuters)





A man on a wheelchair flees with others into the remaining rebel-held areas of Aleppo, Syria December 9, 2016. (Photo by Abdalrhman Ismail/Reuters)





A rebel fighter stands on a pick-up truck mounted with a weapon in a rebel-held area of Aleppo, Syria December 9, 2016. (Photo by Abdalrhman Ismail/Reuters)





Rebel fighters ride on a pick-up truck in a rebel-held area of Aleppo, Syria December 9, 2016. (Photo by Abdalrhman Ismail/Reuters)





A man on a wheelchair flees into the remaining rebel-held areas of Aleppo, Syria December 9, 2016. (Photo by Abdalrhman Ismail/Reuters)





People flee deeper into the remaining rebel-held areas of Aleppo, Syria December 9, 2016. (Photo by Abdalrhman Ismail/Reuters)





Civilians on a motorbike flee deeper into the remaining rebel-held areas of Aleppo, Syria December 9, 2016. (Photo by Abdalrhman Ismail/Reuters)





A man holds the hand of a boy as they flee deeper into the remaining rebel-held areas of Aleppo, Syria December 9, 2016. (Photo by Abdalrhman Ismail/Reuters)





Smoke rises from a rebel-held area of Aleppo, Syria December 9, 2016. (Photo by Abdalrhman Ismail/Reuters)





Forces loyal to Syria's President Bashar al-Assad stand near the remains of shells in the Old City of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





A member of forces loyal to Syria's President Bashar al-Assad stands near mortars in the Old City of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





A man, who returned to inspect his house, walks in the government-controlled area of the Old City of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





A man stands amid the damage in the government-controlled area of the Old City of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





Boys play in Bab al-Faraj square in the government-controlled area of the Old City of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





Clothes on mannequins are displayed for sale near Bab al-Faraj square in the government-controlled area of the Old City of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





A woman sits with a baby at Bab al-Faraj square in the government-controlled area of the Old City of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





Merchandise are displayed for sale near Bab al-Faraj square in the government-controlled area of the Old City of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





A man walks in Farhat Square, a government-controlled area of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





A boy is seen on a bicycle in front of a sand barricade in a government-controlled area of Aleppo, Syria December 10, 2016. (Photo by Omar Sanadiki/Reuters)





A boy pushes a cart with water containers in a rebel-held besieged area of Aleppo, Syria December 10, 2016. (Photo by Abdalrhman Ismail/Reuters)





A man works on firewood to be used for heating in a rebel-held besieged area of Aleppo, Syria December 10, 2016. (Photo by Abdalrhman Ismail/Reuters)





Food is displayed for sale in a rebel-held besieged area of Aleppo, Syria December 10, 2016. (Photo by Abdalrhman Ismail/Reuters)





Civilians fill containers and bottles with water in a rebel-held besieged area of Aleppo, Syria December 10, 2016. (Photo by Abdalrhman Ismail/Reuters)





A man carries food in a rebel-held besieged area of Aleppo, Syria December 10, 2016. (Photo by Abdalrhman Ismail/Reuters)





Boys collect firewood to be used for heating in a rebel-held besieged area of Aleppo, Syria December 10, 2016. (Photo by Abdalrhman Ismail/Reuters)





A boy reacts to a photographer while waiting to fill containers with water in a rebel-held besieged area of Aleppo, Syria December 10, 2016. (Photo by Abdalrhman Ismail/Reuters)





Children fill containers with water in a rebel-held besieged area of Aleppo, Syria December 10, 2016. (Photo by Abdalrhman Ismail/Reuters)





A man carries food as he walks along a street in a rebel-held besieged area of Aleppo, Syria December 10, 2016. (Photo by Abdalrhman Ismail/Reuters)





Smoke and flames rise after air strikes on rebel-controlled besieged area of Aleppo, as seen from a government-held side, in Syria December 11, 2016. (Photo by Omar Sanadiki/Reuters)





Civil defence members work at a site hit at night by an airstrike in Saraqeb, in rebel-held Idlib province, Syria December 11, 2016. (Photo by Ammar Abdullah/Reuters)





A civil defence member works at a site hit at night by an airstrike in Saraqeb, in rebel-held Idlib province, Syria December 11, 2016. (Photo by Ammar Abdullah/Reuters)





A civil defence member attempts to get out of a site hit at night by an airstrike in Saraqeb, in rebel-held Idlib province, Syria December 11, 2016. (Photo by Ammar Abdullah/Reuters)





Forces loyal to Syria's President Bashar al-Assad stand atop of a building in the government held Sheikh Saeed district of Aleppo, during a media tour, Syria December 12, 2016. (Photo by Omar Sanadiki/Reuters)





A member of forces loyal to Syria's President Bashar al-Assad carries a weapon as he walks atop of a damaged building in the government held Sheikh Saeed district of Aleppo, during a media tour, Syria December 12, 2016. (Photo by Omar Sanadiki/Reuters)





Forces loyal to Syria's President Bashar al-Assad walk past damaged buildings in the government held Sheikh Saeed district of Aleppo, during a media tour, Syria December 12, 2016. (Photo by Omar Sanadiki/Reuters)





Forces loyal to Syria's President Bashar al-Assad walk past a tank in the government held Sheikh Saeed district of Aleppo, during a media tour, Syria December 12, 2016. (Photo by Omar Sanadiki/Reuters)





Forces loyal to Syria's President Bashar al-Assad walk past along a street in the government held Sheikh Saeed district of Aleppo, during a media tour, Syria December 12, 2016. (Photo by Omar Sanadiki/Reuters)





Forces loyal to Syria's President Bashar al-Assad gesture as they ride on a pick-up truck in the government held Sheikh Saeed district of Aleppo, during a media tour, Syria December 12, 2016. (Photo by Omar Sanadiki/Reuters)





A member of Forces loyal to Syria's President Bashar al-Assad walks past a damaged building in the government held Sheikh Saeed district of Aleppo, during a media tour, Syria December 12, 2016. (Photo by Omar Sanadiki/Reuters)





An elderly man reacts in the government held Sheikh Saeed district of Aleppo, during a media tour, Syria December 12, 2016. (Photo by Omar Sanadiki/Reuters)





Smoke rises as seen from a governement-held area of Aleppo, Syria December 12, 2016. (Photo by Omar Sanadiki/Reuters)





Govermental Syrian forces fire into sky as celebrating their victory against rebels in eastern Aleppo, Syria December 12,2016. (Photo by Omar Sanadiki/Reuters)





Fighters from the Kurdish-Arab alliance, known as the Syrian Democratic Forces, gather next to a vehicle covered with mud in a field near the Syrian town of al-Naseem, located some 50 kilometres on the western outskirts of the Islamic State (IS) bastion of Raqa, on December 12, 2016. The US-backed alliance announced on December 10, 2016 it would launch the second phase of its battle for the IS group's de facto Syrian capital of Raqa. (Photo by Delil Souleiman/AFP Photo)





Fighters of the Free Syrian Army fire an anti-aircraft weapon in the rebel-held Mashhad area in southeastern Aleppo, on December 12, 2016, as they battle Syrian government forces during an operation to retake the embattled city. The crucial battle for Aleppo entered its “final phase” after Syrian rebels retreated into a small pocket of their former bastion in the face of new army advances. The retreat leaves opposition fighters confined to just a handful of neighbourhoods in southeast Aleppo, the largest of them Sukkari and Mashhad. (Photo by AFP Photo/Stringer)





Civil defense team members carry out search and rescue works after the war crafts belonging to the Syrian Army bombed the bazaar in the Etarib district of Aleppo, Syria on December 6, 2016. (Photo by Ahmed Hasan Ubeyd/Anadolu Agency/Getty Images)





People, who left the eastern districts of Aleppo, carry their belongings as they walk in a government held area of Aleppo, Syria, in this handout picture provided by SANA on December 8, 2016. (Photo by Reuters/SANA)