My understanding is the no-fly would have already been established but for the Syrian (Russian supplied) air defenses which are too formidable.
Let’s send those heroic French and English pilots who managed to bomb a lot of innocents in Libya to man a No Fly effort where there is a 4th Generation AA System such as in Syria.
This is the problem, to completely dismantle the Syrian Air Defense, NATO will need a lot of spec ops insertion to take out key facilities. Some of those facilities might have Russian officers or observers. So while NATO debates for two weeks, the Syrians and Russians know the Spec Ops are coming. If the Russians deliver S-300 systems to the Syrians, then even with spec ops insertion, NATO will still lose a significant number of aircraft. Against an enemy that is not attacking NATO. Potentially the dumbest possible move. So that is what NATO will probably do. What is holding them back right now is Mr. Present and his coming second coronation.
Old school SAM-2s and SAM-3s? Not so formidable. And stand-off weapons can wipe out the most formidable air defense with little danger to the attacker. Hopefully, we’re not establishing a no-fly zone because we don’t want Assad and his minority Alawites replaced with Sunni wackadoos. At least Christians (and maybe the tiny Jewish community) are relatively safe under Assad. So is Israel. Since Syria’s drubbing back in 1973, the border between Syria and Israel has been as quiet as the border between NH and VT (the border between Israel and Lebanon is another story). If Islamic fundamentalists were running the show in Damascus (which I think they will—Assad took too long to suppress this insurgency), they’d be bound to try something stupid, like “liberating” the Golan.