And that won't much more useful to them than the RMB. The Saudi's, whom supply a significant percentage of China's oil, don't want RMB nor some new currency whi

And that won't much more useful to them than the RMB. The Saudi's, whom supply a significant percentage of China's oil, don't want RMB nor some new currency which has the Iranians involved. The Saudi's don't buy as much from China as China buys from them. So they don't want to be stuck with billions of a currency they can't use for anything. But dollars? They can use to that to buy whatever they want from whomever they want. That's because USD is used one one side 88% of all FX trades[1]. If you were going to buy something from another country you already were going to use dollars. [1]: https://stats.bis.org/statx/srs/table/d11.3 https://stats.bis.org/statx/srs/table/d11.3