AMMAN/BEIRUT - Islamic State fighters advanced against rival insurgents in northern Syria on Sunday, capturing areas close to a border crossing with Turkey and threatening their supply route to Aleppo city, fighters and a group monitoring the war said.
Islamic State captured the town of Soran Azaz and two nearby villages after clashes with fighters from a northern rebel alliance, which was formed last December and includes both Western-backed fighters and Islamist militants.
This meant Islamic State will be able to move along a road leading north to the Bab al-Salam border crossing between the Syrian province of Aleppo and the Turkish province of Kilis, the Syrian Observatory for Human Rights said.
The town's loss is a blow to rebels grouped in the so-called Jabhat al-Shamiyya alliance (Levant Front), because the area sits on an important supply route to bring weapons into eastern Aleppo, two fighters said.
