Granted, Russian holdings of US Treasurys are not that substantial (and could be monetized entirely in three months of POMO by the Fed), and western financial linkages to Russia, aside from trade routes, are not life-threatening, but if Russia were to take the baton, and other BRIC countries, already furious by the recent US decision to not boost their IMF status, follow suit, then Obama's life is about to become a living nightmare. Especially, if that most important BRIC member - China - does any of the many things it can do to indicate if, in this brand new Cold War, it is with or against the US...
Finally, those curious what are the linkages between the west and Russia are, review our recent post on the matter: All You Need To Know About Russia, In Charts.