Reuters reports via Yahoo News that Turkey continues to mount air strikes on the Kurds in Iraq. Since Kurds are just about the only effective fighting force opposed to ISIS, these strikes are not in our interests.
Through a third party (perhaps Israel), the U.S. should arrange for Kurds to acquire and learn to use MANPADs. With them Kurds can shoot down the occasional Turkish plane.
At the very least that would keep the Turks up high enough and/or far enough away to be inaccurate. And it would boost the Kurds' morale, no small thing in their chaotic region.