Since Russia is in the G-8, our response to the events in Ukraine should have been much more cordial than what they are getting. Something along the lines of "look Vlad, wtf ?". Sanctions be damned. It appears that the west really has no clue about foreign policy.
US did respond. Ukrainian gold has been given "safe keeping" at New York FED http://www.elitetrader.com/vb/showthread.php?t=282752