The Russians were attacked in territory that the U.S. formally recognizes as Ukraine, and which Russia agreed was Ukraine in 1991. There is a long tradition of not rewarding aggression. Russian have no business being in Crimea.
Nobody should feel obligated to keep a straight face when any American sanctimoniously complains about Russia invading a sovereign neighbor.
We have no business meddling in Ukraine government and starting color revolutions to install people that will do our bidding over the welfare of their own people.
Crimea is Russia.