Syrian Civil Defence workers evacuate victims from the scene of a reported barrel bomb attack by Syrian government forces on March 5, 2015 in the Qadi Askar area, in the rebel-held side of the northern Syrian city of Aleppo. Heavy clashes and a regime barrel bomb attack shook Aleppo after rebels tried to seize an intelligence headquarters the previous day, in a forceful rejection of UN efforts to reach a ceasefire.  AFP PHOTO / AMC / ZEIN AL-RIFAI        (Photo credit should read ZEIN AL-RIFAI/AFP/Getty Images)