In Syria's second city Aleppo, craters blasted by regime air raids on opposition-held areas have been transformed into improvised swimming pools for children to cool off in raging summer temperatures. Although the water is filthy, the war-weary children of the country's one-time commercial capital find in these pools a rare opportunity to both have fun and seek relief from the oppressive heat. In the battered district of Shaar, children and teenagers swim carefree in one flooded crater, the rubble of buildings in a totally destroyed street their backdrop, an AFP correspondent said. Despite the visible presence of water in the street, the battered city suffers from endemic water and electricity shortages after being ravaged by two years of war.