Let's see. The current BRICS group of countries (I don't think you can call them a "coalition" and I feel India is a bit ashamed to be there with Russia now, bu

Let's see. The current BRICS group of countries (I don't think you can call them a "coalition" and I feel India is a bit ashamed to be there with Russia now, but they depend on Russian shipments of weapons) can set up any payment system they want to exchange products between themselves. However, setting up such a system takes time and expertise, and as it would work between just these countries, its usefulness would be very limited - for now, the only beneficent would be Russia. But in any case, they would need to agree on a currency, and for sure it wouldn't be the RUB. Using yuans would make things for China quite complicated. And the current situation makes it crystal clear starting a war with another country may put your country in a deplorable position almost immediately. That's a good thing.