The dollar will remain in place as long as the US Army is the defacto world government's army.
That may not last. I don't think China was expected to have recovered this fast. The takedown was only a knockdown so far. If they come on strong and can manage to play nice with Russia, then the US is in for a big struggle.
Iran has faster and better missiles. Ditto Russia and China. A concerted push on 3 fronts? Then what? Instead of a $3 trillion nationAL DEFICIT MAYBE WE COULD GO FOR A $4 TRILLION DEFICIT?