“Not to let Obama off the hook, but there is no right side.”
the “right” side is the one that eliminates ISIS; if the best way to do that is to join with the Russians in propping up Assad and wiping all the “rebels” off the face of the map, then I would consider that the “right” side.
We don’t know who all is ISIS. It is not that simple. There are many groups that morph back and forth and change allegiances. Also once you get one of one faction another just as bad or worse will pop up. This has been the history of the region for over 1000 years.