Turkey irate over US obstructions in Syria

Officials in Ankara are convinced that Washington is stonewalling their efforts to curb and defeat the Syrian Kurdish People's Protection Units (YPG) and its political wing, the Democratic Union Party (PYD). The prevailing belief is that Washington wants to establish some kind of autonomous Kurdish region in northern Syria, similar to one in Iraq, where it hopes to maintain a military foothold for the foreseeable future with a view toward pursuing its agenda in the Middle East.

https://www.al-monitor.com/pulse/originals/2018/11/turkey-syria-united-states-is-washington-protecting-ypg.html