The U.S. government collects taxes throughout the world and those taxes MUST be paid in US dollars. Most international trade eventually (if not exclusively) pa

The U.S. government collects taxes throughout the world and those taxes MUST be paid in US dollars. Most international trade eventually (if not exclusively) passes through the dollar system. Since no jurisdiction is entirely self-reliant, basically all aspects of the economic system touch on the dollar directly or indirectly. That tax collection is enforced by an apparatus with many levers of power including, but not limited to, the military and its nuclear weapons. So yes, the dollar is backed by the threat of nuclear annihilation in some sense.