Especially with BRICS (Brazil, Russia, India, China and South Africa) members there has been a move to replace the US $ as the currency of international trades with a digital currency mBridge. There have been disagreements within BRICS members and Saudi Arabia has said it will not do trades in mBridge and stick with the $. Over time I can see this as real possibility.
See https://en.wikipedia.org/wiki/MBridge .
