For the past several years, Turkey has feared and sought to prevent two things in Syria: the United States' partnership with the Kurdish People's Protection Units (YPG) in northern Syria and a role for the Kurds in the settlement process that would eventually make their de facto autonomy permanent.
Despite all its efforts, Turkey has failed to stop US military aid for the YPG-dominated Syrian Democratic Forces (SDF). Now it seems to be losing also the second chapter, in which Russia is the lead player. Ankara has signaled readiness even for dialogue with Damascus, but preventing a Kurdish role in the solution process via the Russian track is becoming increasingly difficult.