ALEPPO, SYRIA - JUNE 8: Smoke rises over the wreckage of buildings after a helicopter belonging to the Syrian army carried out barrel bomb attacks on Beyan hospital and a bazaar in Aleppo, Syria on June 8, 2016. ( Ibrahim Ebu Leys - Anadolu Agency )
ALEPPO, SYRIA - JUNE 8: Smoke rises over the wreckage of buildings after a helicopter belonging to the Syrian army carried out barrel bomb attacks on Beyan hospital and a bazaar in Aleppo, Syria on June 8, 2016. ( Ibrahim Ebu Leys - Anadolu Agency )
ALEPPO, SYRIA - JUNE 8: Smoke rises over the wreckage of buildings after a helicopter belonging to the Syrian army carried out barrel bomb attacks on Beyan hospital and a bazaar in Aleppo, Syria on June 8, 2016. ( Ibrahim Ebu Leys - Anadolu Agency )
ALEPPO, SYRIA - JUNE 8: Syrians carry the body of a man after a helicopter belonging to the Syrian army carried out barrel bomb attacks on Beyan hospital and a bazaar in Aleppo, Syria on June 8, 2016. ( Ibrahim Ebu Leys - Anadolu Agency )
ALEPPO, SYRIA - JUNE 8: Firefighters try to extinguish fire after a helicopter belonging to the Syrian army carried out barrel bomb attacks on Beyan hospital and a bazaar in Aleppo, Syria on June 8, 2016. ( Ibrahim Ebu Leys - Anadolu Agency )
ALEPPO, SYRIA - JUNE 8: Syrians help a wounded man after a helicopter belonging to the Syrian army carried out barrel bomb attacks on Beyan hospital and a bazaar in Aleppo, Syria on June 8, 2016. ( Ibrahim Ebu Leys - Anadolu Agency )
ALEPPO, SYRIA - JUNE 8: Firefighters try to extinguish fire after a helicopter belonging to the Syrian army carried out barrel bomb attacks on Beyan hospital and a bazaar in Aleppo, Syria on June 8, 2016. ( Ibrahim Ebu Leys - Anadolu Agency )
ALEPPO, SYRIA - JUNE 8: Syrians help a wounded woman after a helicopter belonging to the Syrian army carried out barrel bomb attacks on Beyan hospital and a bazaar in Aleppo, Syria on June 8, 2016. ( Ibrahim Ebu Leys - Anadolu Agency )