You're talking about some kind of projection in hard power. it's likely that the US will continue to wield the most hard power for the foreseeable future (though this war with iran has exposed logistics issues in that, as well as drained important armaments that will take years to recover).
The bigger loss is in soft power, the power that comes from economics, having the worlds reserve currency, and even the trust and respect of our allies.
The bigger loss is in soft power, the power that comes from economics, having the worlds reserve currency, and even the trust and respect of our allies.