Trump’s pursuit of an illusory sphere of influence is unlikely to bring us peace or prosperity—any more than the invasion of Ukraine brought peace and prosperity to Russians—and this might become clear sooner than anyone expects. If America is just a regional bully, after all, then our former allies in Europe and Asia will close their doors and their markets to us. Sooner or later, “our” Western Hemisphere will organize against us and fight back. Far from making us more powerful, the pursuit of American dominance will make us weaker, eventually leaving us with no sphere, and no influence, at all.