That won't always be the case. Basically, it's all about with whom you trade most. If Saudi Arabia finds themselves in a position where they have 50+% of their

That won't always be the case. Basically, it's all about with whom you trade most. If Saudi Arabia finds themselves in a position where they have 50+% of their imports and export originates in China it will make sense to switch to RMBs to all trades, and the dollar price of oil, or other goods becomes irrelevant. And the Chinese economy is on track to become bigger that American by 2030.