The strength of the dollar was partly built on the concept of the petrodollar. With the addition of SA, Iran and UAE, BRICS now represents a huge chunk of the world's oil reserves.Heard a radio ad (I think it was one of the buy gold firms) that said BRICS+ is about to launch a digital global currency that will greatly reduce the value of the dollar (i.e. so you should buy metals from them).
So there. It's scary because an ad said so.
Many said the main reason (or at least a big reason) we went to war with Iraq was because Iraq stopped selling its oil in dollars.
Years ago I read speculation that if the dollar stopped being the world's reserve currency, the value of the dollar - which is to say the purchasing power of folks like us - would plunge anywhere from 25% to 45%.
Obviously nobody - including foes like China and Iran - wants that to happen overnight. That could plunge the whole world into a depression. But they do want it to happen eventually. Some, like China, because they want to be top dog. Others because they don't want us to rule.