Boys walk past the local headquarters of the ruling AK Party in Karkamis, bordering with the Islamic State-held Syrian town of Jarablus, in Gaziantep province, Turkey August 1, 2015. Karkamis lies on the northeastern edge of a rectangle of Syrian territory some 80 km (50 miles) long, controlled by the radical Islamists. The United States and Turkey hope that by sweeping Islamic State from this border zone, they can deprive it of a smuggling route which has seen its ranks swollen with foreign fighters and its coffers boosted by illicit trade. Picture taken August 1, 2015. REUTERS/Murad Sezer