Russia has proposed to jointly host an international conference on the return of refugees in the Syrian capital Damascus next month.A high-level Russian...
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Return of refugees would automatically mean that Assad could gain control of more areas especially in the eastern side. Also it might ease up on many factors such as economic investment to repair the country.
I am not sure Putin will get the support because as they said, a regime change must be done. Problem is Putin only needs to fix things with Turkey and not the rest of the world to ensure that Syria can be rebuilt.
Because Turkey is capable of doing that, but Assad and Putin must deliver on the northern safe zone and focus on the YPG held areas. There is no ifs and buts to this and no use saying Turkey should withdraw.
With 4 mio refugees in Turkey and 3+ mio in idlib we have a pretty burden on us. And withdrawing is not going to fix that in fact (I know some will be pissed) but expanding the safe zone is another option.
But it would be much better if Assad and Turkey cooperated on this. Afterall Turkey goes in for Syrias territorial integrity, I doubt US and YPG does that.