Syria’s regime added another mass killing to its long list Tuesday. At least 31 civilians, including 14 children, are dead after a bombardment strike in a rebel-controlled district of Aleppo, rebels say. Many have fled the embattled city, where the government troops and opposition groups are still fighting for control. The most horrifying incidents in the last month include a missile strike on Aleppo University that killed at least 80 and evidence of a mass execution-style killing. Meanwhile, in Damascus mortar shells seemingly aimed at the presidential palace hit two hospitals, but there were no casualties.