Kurdish fighters in Raqqa

Syria -- A Kurdish fighter from the People's Protection Units (YPG) fires a rocket in Raqqa, June 15, 2017

Syria -- A commander of Kurdish fighters from the People's Protection Units (YPG) listens to her comrades in Raqqa, June 15, 2017

Syria -- A civilian riding a bicycle gestures towards a vehicle of the Syrian Democratic Forces (SDF) fighters in the Raqqa's al-Sanaa industrial neighbourhood, June 14, 2017

Syria -- A Kurdish fighter from the People's Protection Units (YPG) attaches a detonator to a rocket in Raqqa, June 15, 2017

Syria -- A Syrian Democratic Forces (SDF) fighter carries his weapon as he stands near Raqqa city, June 14, 2017

Syria -- Female Kurdish fighters from the People's Protection Units (YPG) sit in a house in Raqqa, June 15, 2017

Syria -- A Kurdish fighter from the People's Protection Units (YPG) fires a 120 mm mortar round in Raqqa, June 15, 2017

Syria -- A Kurdish fighter from the People's Protection Units (YPG) fires a 120 mm mortar round in Raqqa, June 15, 2017

Syria -- Kurdish fighters from the People's Protection Units (YPG) extinguish a fire in a wheat field burned during clashes with Islamic State militants in Raqqa, June 15, 2017

Syria -- A female Kurdish fighter from the People's Protection Units (YPG) rests in Raqqa, June 15, 2017

Turkey -- Syrians, who say they are returning to Syria ahead of the Eid al-Fitr, carry their belongings as they walk to the Turkish Cilvegozu border gate, located opposite of Syrian crossing point Bab al-Hawa in Reyhanli, in Hatay province, June 15, 2017