The IMF has accepted the first debt payment in Yuan. There have been plenty of currency swaps between BRICS countries and others to help them trade without the US Dollar. The Dollar is losing its seat as the currency of international trade. Thus the US can no longer be the imperialist hegemon.

BRICS, and possible shake ups in the petrodollar system.

Dedollarization refers to countries reducing reliance on the U.S. dollar as a reserve currency, medium of exchange or as a unit of account

• Wikipedia