In 1218, the pagan armies of the Mongols appeared on the horizon of the Middle East to begin a series of campaigns unparalleled in their scale of violence. In the deceptively mellifluous phrasing of the Persian historian Juvaini, “amadand o kandand o sokhtand o koshtand o bardand o raftand.” (“They came, they uprooted, they burned, they killed, they looted, and they left.”) And then they came back again, and again. Over the course of four decades, the Mongols subjugated or destroyed the whole gamut of states that comprised the region’s medieval geopolitical jigsaw, from the Muslim-ruled states of the Khwarazmians, Saljuqs, Ayyubids, and Zangids to the different Christian polities of the Byzantines, Armenians, Georgians, and Crusaders. Three generations would pass by the time the Mongol emperor Ghazan Khan converted to Islam in 1295. By then, the Middle East had been irrevocably transformed. Exploring these decades of destruction and reconstruction, Nile Green talks to Nicholas Morton, author of The Mongol Storm: Making and Breaking Empires in the Medieval Near East (Basic Books, 2022).