WELL, GOOD: Turkey Ejects Islamic State Forces From Segment of Syrian Border.

The breakthrough victory deprives Islamic State of direct access to the areas that had been vital to its ability to resupply itself with foreign fighters and bomb-making materials. Losing access to that stretch of the border will likely make it harder for the group to preserve its self-declared caliphate and export terrorism around the world.

But:

Turkey and the U.S. have accused Syrian Kurdish fighters of breaking promises not to seize more land along the border area. Turkey views those Kurdish militias as an offshoot of its own Kurdish insurgent group—the Kurdistan Workers’ Party, or PKK—and fears the Syrian Kurds want to create an autonomous Kurdish state in the border region.

Syria remains a multinational powderkeg.