Using a synthetic narrative approach, this ambitious work uses the lens of multipolarity to analyze Tang China's (618-907) relations with Turkestan; the Korean states of Koguryo, Silla, and Paekche; the state of Parhae in Manchuria; and the Nanzhao and Tibetan kingdoms. Without any one entity able to dominate Asia's geopolitical landscape, the author argues that relations among these countries were quite fluid and dynamic--an interpretation that departs markedly from the prevalent view of China fixed at the center of a widespread "tribute system."

To cope with external affairs in a...