The US and Turkey have reached a deal on Wednesday, according to both sides, which is intended to reduce the risk of Turkey invading northern Syria. The deal will establish an operations center for a "safe zone" in northern Syria. 

The safe zone is intended to span 250 miles of northeastern border of Syria and Turkey, and will be carved more or less entirely out of Kurdish-held territory. The deal is meant to allow Syrian refugees to return through this "peace corridor."

Deals on how wide the corridor will be is unclear, and it's also not clear this is going to settle everything on the matter, though Turkish officials did say they believe the US is getting closer to their position.