Printed money is like a cheque: Worthless until someone accepts it. No one want's rubles, including China and India and Russia doesn't want more yuan or rupees in exchange for oil because they are locked out of SWIFT. They are forced to settle debts with gold [metal].
Because of West's meddling into Ukraine's internal affairs (Victoria Nuland) and prospects of drawing Ukraine into Western sphere of influence and becoming a NATO member.
NATO is a DEFENSIVE pact, like the Three Musketeers - One for all, all for one - [formed ONLY because of the aggressions of Russia] so it is none of Russia's business if they were to join, which was not going to happen anyway.
