Thousands of Syrian civilians were preparing to leave the long-besieged Damascus suburb of Darayya on Friday after rebel forces there were forced to surrender under the pressure of starvation. Once the symbolic heart of Syria’s 2011 uprising against President Bashar al-Assad’s rule, the suburb had become synonymous with the government’s unsparing war on the armed opposition and civilians living under its control. In photographs shared by local activists, dozens of families could be seen dragging suitcases through the shattered streets.