Top message: Go to War in Syria? Thumbs up or Thumbs down? by Alpha Male
Replying to: Webb, your opinion is the only qualified opinion on war. Thumbs up or Thumbs down? by Alpha Male
That said, the rebels aren't exactly a stellar lot nowadays. What began as anti-authoritarian resistance has been morphing into sectarian jihad over time. This is because much of the early resisters are either dead or have fled the country, and the sorts of folks who see a situation like this and say, "WOW I REALLY GOTTA GET ME SOME OF THIS," unfortunately tend to be mujahadeen with a sectarian axe to grind. They're probably going to get nastier over time, because unfortunately that's pretty much their replacement pool. This means that if the rebels do topple Assad, you're probably going to end up with someone worse in control. You want to be really careful about who you give what assistance to.
Interesting note: in Bosnia-Herzegovina, foreign mujahadeen volunteers eventually rallied to the Bosnian flag, and they were the sorts of nasty characters you'd have expected. Their presence in country and their viciousness was used for years as an excuse to Radovan Karadzic and his ilk run amok. And, of course, we had to cater to Russian pan-slavic interests to keep the UN in the game.