Turkey has a longer border with Iran and Syria then it does with Iraq. Yet, all we hear Turkey complain about is the 'terrible' Iraqi Kurds. Turkey should be assembling troops on its Iranian or Syrian borders. The entire western world would see the logic with that deployment.
The Kurds are horribly oppressed in both Syria and Iran. The PKK is unable to launch any of their terrorist operations against Turkey from either of these places. The safe haven created by the US in Northern Iraq, while a relief for civilian Kurds, also provides the PKK terrorists a safe haven to which they can retreat and from which they can plan and launch their terrorism.