Russia is in no position to wage war with the US.
They will not jeaperdize the arrest of Crimea and their own nation for Syria.
In the same vein, the US will not mount a ground operation, just some bombs.
It's the usual arm wrestling war game with third parties. If one bombs the other for real, then both countries will see severe damage. I'm pretty sure the US has the best and bigger bombs, so i really doubt Russia will do anything but their usual scheming.







