The USD is not just the world donimant currency by people choice, But by trust.

Dollar is the most stable and trusted currency in the word reasons many nations can't do without it.

As big as Russia in world stage. They didn't float their corrency to the USD. Russia is using a fixed exchange rate controlled by the central bank of Russia.

India and china didn't float their currency with the dollars. They are using similar template to control it. The brigg's project to issues a single trading currency will never be a threats to the us dollar and there are several reasons and factor to why I said so.

Even among the briggs they know they can't do without the us dollar and trading with a single currency will not see the light of the day due to verious instreast.

The china - Nigeria yaun swap deal didn't work because the Chinese doesn't trust the Nigerian Naira instead they want the loans back in dollars and why they want to give the Nigeria loans with Yuan while didn't we oay them back with naira or at least the Yuan?