By the way, so far the US has interfered against any country which has either tried to ditch the petrodollar in the past or just had some other significant strategical advantage which the US wanted to exploit (the whole middle east pretty much and others), by doing that they've made sure that first - their huge expenses in their military are properly circulating and second - after wrecking havock in those countries the US pushed it's own governments and made dozens and dozens of various concession agreements for all sorts of different public services and sectors, which means that they received huge chunks of the whole infrastructure of those countries for almost nothing and made huge profit out of it.
