Assad and the Russians, and the Turks all tried to make their move but we beat them to it.
The SDF and our troops are going to do the heavy lifting, real soon.
Look for a partition of Syria into Kurdish, Turkish and Assad/Syrian areas afterwards.
That will require a lot more boots on the ground, and the Russians will not allow air support that targets the Syrian Army loyalists, not even "accidentally".
Therefore, it will have to be a Kurdish autonomous state Federated with Syria, and Turkey locked out, and the US will have to agree to the Russian brokered peace deal.
Our troops will be at serious risk if the Turks try to put a knife in the Kurds backs, or SDF tries to re target Syrian loyalists or Kurds.
This could go very bad very quickly.