You REALLY want to give a fresh batch of Stingers to al-Queda-affiliated jihadis?
Hey, I'm rooting for the Shiite incumbents. Syria is right in the middle of Sunni-land. If we get lucky, it will serve as a roach motel for every jihadist in the region.
Stingers can be pre-programmed to die after a preset date and programmed to not hit any aircraft with a friendly transponder.
In the longrun the russians are a much bigger threat, kick their ass at every opportunity. The goat loving rag heads will kill each other off and slink back into the 8th Century for another 300 years, with just a little prodding.