Still Putin --
Remember - China only holds $1.2 trillion (out of $17 trillion, that's only about 7.5%) of our debt ... if they start dropping it, the dollar will fall ... but, because the dollar falls, so will the ruble ... there's a lot more room for adjustment in the dollar than there is in the ruble ... in fact, I would suspect that the dollar falling will cause a complete collapse of the Russian economy.