Are you sure about that ? both Putin and Xi would jump to make a deal for future oil exports in exchange for meeting Saudi social / security needs.
> America has a large and diverse non-oil economy
So does India, China <-- not superpower or depend heavily of foreign borrowing.
Pulling the plug on the dollar would materially make Americans poorer, independent analysts have put 50% of the value of the dollar arising from WRC status.
Americans can't handle that level of lifestyle change, without it being turned into a revolution.