Once the reserve currency turns Weinmar, the international exchange SDR currency will revolve around gold and silver reserves of each country.
You print X dollars on Y(our) G+S reserves, your exchange rate is Z.
Oil lubes the transaction and that is why Venezuela and Iran is in the cross hairs, both Russian/Chinese protectorates.
bUnckle up
https://www.bing.com/search?q=money+pink+floyd+youtube&pc=MOZD&form=MOZTSB