On August 24, Turkey invaded Jarabulus, a Syrian border town held by ISIS, with great fanfare: several hundred Turkish soldiers, twenty tanks, and 1,500 Free Syrian Army (FSA) fighters from Islamist militias. In reality, the whole battle was a fake. ISIS had quietly left town several days before, and the difference between this and their usual behavior convinced some observers, particularly the Kurds, that their exit was coordinated with Ankara.

Source: Turkey Is Supporting the Syrian Jihadis Washington Says It Wants to Fight | The Nation – 9/16/2016.