I see no moral obligation to act on Syria. Not militarily, not with aid. We can do the latter because it makes us feel better, but the hell and the evil in that country is so intertwined with the populace that, in my opinion, we cannot guarantee any 'aid' ends up only in 'innocent' hands.
Who are the 'innocent' in this conflict, except the children and the disabled elderly?
Who will we shoot at? Who will we embargo? Who will we bomb?
Will we shoot at Assad? Here's what the rebels are up to:
NSFW, TRIGGER, ETC.
Shooting at electrical workers:
http://www.liveleak.com/...
Abusing the 'Yellow Man of Syria'
http://www.liveleak.com/...
Will we instead fight against the rebels?
Assad is bombing civilian-populated areas with non-precise weapons and airplanes:
http://www.liveleak.com/...
Who is 'right'? Who is 'good'? Chemical weapons use is horrible, a war crime...but when you see two bad people duking it out in the street, both bloodying each other terribly, do you step in?
It's not for me, no thanks. And intervention in Syria is less popular in the US than Congress.