
Stationing all the aircraft near the Khmeimim airbase can be risky. There is no 100% guarantee that Trump will not attack the airbase, just because the Russians are there. The Syrians should better deploy their aircraft in 3-4 different locations.
I think that there is some secret agreement between Trump and Putin. Without consulting with the Russian Assad will not do any actions. I don't understand why Americans will not provide the rebels with portable anti-aircraft missile systems. Maybe it is time?
You want to give MANPADS to the rebels? That will be disastrous. Most of these weapons will end up with the ISIS and the Al Qaeda, and they will use them against the NATO and the Russian aircraft.