This buffer zone being talked about....would be 300 km long, and I can’t imagine this being a practical thing that the Turks could manage without 10,000 troops on permanent duty there. As far as I see it....Syria isn’t existing anymore....it’s like three to five mini-states existing.
I think it will exist.
Control of it? That is another issue.
Turkey has no place in Syria. Nor does Iran.
Russia? We shall see.