Five hundred years of Western hegemony has ended, while the global majority's aspiration for a world order based on multipolarity and sovereign equality is rising. This incisive book addresses the demise of liberal hegemony, though pointing out that a multipolar Westphalian world order has not yet taken shape, leaving the world in a period of interregnum. A legal vacuum has emerged, in which the conflicting sides are competing to define the future order. NATO expansionism was an important component of liberal hegemony as it was intended to cement the collective hegemony of the West as the foundation for a liberal democratic peace. Instead, it dismantled the pan-European security architecture and set Europe on the path to war without the possibility of a course correction. Ukraine as a divided country in a divided Europe has been a crucial pawn in the great power competition between NATO and Russia for the past three decades. The war in Ukraine is a symptom of the collapsing world