Assad will probably play his full hand, Israel will bluff, and the EU will fold having moaned that the cards are marked; America will remove the $25,000 chips from the table and the Arab League will have already cashed theirs in to hire a number of prostitutes and a couple of EU fighter jets to escort them home.
A friend of mine is from Syria. She already told us that the media is hugely in favour of the rebels, even though Assad seems to be the better option.
Here's the reasoning:
Many of the rebel groups are Islamists and will probably fight the non-Islamist groups if they were to win. Both many Muslims and basically all people of other religions in the area are in favour of Assad because he at least only kills a few.
I doubt anyone (That is to say, western powers) will go to war, mainly because it's too costly.
I expect various organizations (CIA, SF, etc.) to have a few missions in the area, but that's about it. No F-16's and certainly no F-22's.
One possibility for war is the following: Israel claims to be threatened (note missile launch, etc.) and use the opportunity to expand. The land could then be used to deal with Palestine and Hamas. (In what way, I'm not yet sure)
The Islamic countries unite and we have to go to the rescue.
I think many of the news reports you showed were grossly inaccurate, but I cannot claim more detailed knowledge.