In Iraq's Yazidi region of Mount Sinjar, the Iraqi Kurdish peshmerga and the PKK militia from Turkey are fighting side by side. In the past, relations between the two major Kurdish forces have often been strained. That's been laid aside somewhat to allow the two forces to repel the jihadists from Mount Sinjar, and they're now fighting together to take control of Sinjar city. Adam Pletts and Selim El Meddeb have been to the frontline to see this uneasy alliance in action.
Programme prepared by Patrick Lovett and Elom Marcel Toble