The United States is undergoing a profound strategic shift from burden-bearing superpower to burden-resisting and increasingly unbound power. Driven by resentment over uneven alliances, faith in geographic insulation, and a desire for maximum freedom of action, America is redefining its role in the world. This transformation destabilizes the global order it once sustained and forces allies, especially in Europe, to confront a new reality: the United States will no longer carry the same burdens it once willingly accepted. Understanding this shift is essential for grasping the future of alliances, global security, and American power.