China is scheduled to peak this decade, at a much, much lower level per capita than the US is at.
China is on the good track. Taking bold political decisions to control its emissions. Meanwhile US is stuck at 3x EU's per capita emissions, and 4x France's.
Among rich countries (or developing ones) only Saudi Arabia is worst. That's USA and it's lack of action that worries me the most for the future
Unless they also build a worldwide banking infrastructure, like the US has in the current inter-bank transfer infra (all centralized through NYC), the availability of a post-dollar currency is not enough. There are already a bunch. There's the euro-dollar, all the big reserve currencies. What's missing is that infra.