Old Reg thinks he has outsmarted everyone. He and the Turkish Military Intelligence have been supporting the IS in Syria for months, allowing them arms and personnel safe passage through Turkey, and some say actually supplying them with arms, plus military intelligence. He waits for the IS to defeat the Syrian Kurds - thus preventing a link up of all Kurds across both Iraq and Syria creating the semblance of a new Kurdish state - and then he will declare a military buffer zone in Syria, almost certainly around Kobaine, pushing in Turkish troops, who will probably find that the IS fighters have 'mysteriously' disappeared into the night, to concentrate the fight on Assad.
No wonder the Kurds are going mad, both in Turkey and Syria/Iraq. Still they have supped with Reg and thought they had the beginnings of a peace deal, only to find that they are on the receiving end once again of the full forces of the Turkish state. Perhaps they'll now stop voting for the AKP when they have little or no opportunity to vote for Kurdish parties.