Russia cant afford to back Assad for long.
Its not the Soviet Union. They don’t have money to burn, and ports outside Russia are moot when the Russian fleet barely exists, particularly in the Black Sea/Med. Nice to have, not have to have.
Anything can happen of course. The Iraq precedent is instructive. Its way more expensive to suppress an insurgency than it is to keep one going. I am sure the Saudi and Gulf money is flowing in this proxy war.
They are getting increasing revenues via Nat. gas/oil.
The Saudi/Gulf States aren't getting much in return yet. And the FSA seems to not be getting the type of weapons they need. RPG 22. Even 18s would help. Still using the old 7s from Vietnam era. They need longer range weapons. FNs. G-3s, etc. They are outgunned. No air cover. Under constant arty/mortar/tank fire. Doesn't look good for them at this point...