How the Mongol invasions of the Near East reshaped the balance of world power in the Middle Ages. For centuries, the Crusades have been central to the story of the medieval Near East, but these religious wars are only part of the region's complex history. As The Mongol Storm reveals, during the same era the Near East was utterly remade by another series of the Mongol invasions. In a single generation, the Mongols conquered vast swaths of the Near East and upended the region's geopolitics. Amid the chaos of the Mongol onslaught, long-standing powers such as the Byzantines, the Seljuk Turks, and the crusaders struggled to survive, while new players such as the Ottomans arose to fight back. The Mongol conquests forever transformed the region, while forging closer ties among societies spread across Eurasia. This is the definitive history of the Mongol assault on the Near East and its enduring global consequences.