Dear people, if Obama did not start messing with ME wasp's nest and destroying their existing regimes a few years ago, the world would not have to deal with ISIS now and Putin did not have to bomb it. Let's just be honest and face it.
but there's the chechen connection (along with cia training of their top fighter) and putin can't allow them to get out of control either. ..and the cia is/was surely involved in the ukraine actively trying to help destabilize russia. putin's no fool..he backs and arms assad because we back and arm isis.
a few decades back we were backing and arming the mujahideen after russia invaded afghanistan... putin's playing chess and obama is playing checkers, though, tovarish.