Turkish soldiers sit on top of an armoured vehicle as they take up position on top of a hill near Mursitpinar border crossing the Turkish-Syrian border during fighting between Syrian Kurds and the militants of Islamic State group (ISIS), as seen from a hilltop on the outskirts of Suruc, at the Turkey-Syria border,Kobani, also known as Ayn Arab, and its surrounding areas, has been under assault by extremists of the Islamic State group since mid-September and is being defended by Kurdish fighters.