Of note: The US government, in collusion with the Federal Reserve, has the ability to print the US dollar at will... and can export its inflation to the rest of the nations of the world. Any nation that wishes to engage in international trade, including the purchase of commodities such as natural gas or oil, must maintain massive US dollar reserves to enable its purchases.
The world, in effect, acts as a sponge to absorb US inflation, allowing the US government to amass obscene deficits that enable a massive military budget and enrich a very small portion of the US population at the expense not only of the world's population, but also of the American working class.
As for any nation that wants to break free of the US dollar, we know all too well what the US has in store for them...This is where the Russian Federation comes in. If one really wants to understand why the US establishment hates Russia under Vladimir Putin, all one must do is understand the dollar's role in the world. Russia is a direct threat to the proliferation of the US dollar.