Long story short .... it's "Fed"!!!!!!printing money into oblivion, crypto currency and BRICs ,i would say, are repercussions of fed policy, making america live on credit card. Sending cheap money to china causing an unsustainable investment backed by money out of thin air, creating a timebomb in the end.
Brics nations understand they have been piling up toilet paper as US bond, before shit hit the fan, they want to run away from US dollor....this was to happen .....all blame to fed!!!!!!!