In the end though, doesn't a currency have to "win out" here? Can't entirely go back to gold/silver, so instead, delay/buffer the BRICS bootup with dollar "strength" in short term energy/oil markets, backstop the dollar with gold/silver/mineral repricing (after establishing trade dedications with Rus/China)
And ride out until a "new swift" kicks on. Europe seems like the real loser here imo