Raqqa, Syria—A Syrian Democratic Forces soldier weeps as medics treat his comrade, who was injured by sniper fire on June 28. Fighting in the city heated up as the Islamic State militant group (ISIS) fought back against SDF forces, which said they had the insurgent fighters pinned down. “The city center is completely besieged, and our forces are fighting from all sides,” Ali Shervan, a Kurdish SDF fighter, told TV channel Kurdistan24.