The Syrian conflict has become (amongst other things) a proxy war between Iran & Saudi Arabia, which certainly complicates things. With Hezbollah joining the Assad side, and various radical Islamist groups joining the rebels, it's fast becoming a case of finding the lesser of two (or more) evils. In the middle of this nonsense, innocent civilians are getting hurt & killed.
Any intervention has to acknowledge that there have been atrocities on both sides, and neither is much interested in freedom & democracy. Whatever action is taken, it needs to be under the auspices of the UN, should be focussed absolutely on the welfare of civilians & the prevention of further conflict. That said, I expect we'll see airstrikes against key military installations & major units known to be loyal to Assad. But FFS, let's not go down that f***witted road of 'shock & awe' again.