Hmmm,seems to me Putin is a bit busy over in the Ukraine
There is nothing so urgent in the Ukraine which can't be dealt with later and shoring up his southern flank will do nothing but help him. Not to mention that he would be in-line to get a good share of the oil revenues.
And the US is a bit overstretched with Obama's armed and trained nation-busters busting apart a nation we "liberated" to do all that much about it.