It's been mentioned in the Ferguson thread...which is exactly where you'd look for discussion on such a thing...
Anyway, it's no surprise that this has come about, I doubt it'll lead to war with Russia though, no more than arming the Mujahideen lead to war with the Soviet Union. There might be clashes between proxy troops, but not actual US vs Russia fire, both sides have too much to lose to let it get that far.