The end of the Cold War promised a unipolar era dominated by a single superpower. Thirty-five years later, that world no longer exists. From Unipolar Moment to Multipolar World: 1991-2026 traces the transformation of global order from post-Soviet triumphalism to the current contest among rising powers. Through political history and documentary insight, the book examines how the United States, China, Russia, and regional blocs reshaped diplomacy, war, and trade. It explores the returns of nationalism, the redefinition of alliances, and the economic shifts rewiring global influence. This is the story of how the world's balance of power fractured-and what it means for the century ahead.