This comprehensive volume by Kenneth M. Setton provides an authoritative examination of the Papacy's involvement in the Levant from 1204 to the late 14th century. As part of the American Philosophical Society’s Memoirs, this work serves as an essential resource for understanding the geopolitical and ecclesiastical challenges faced by the Church during a period of transition. Setton meticulously documents the strategic, religious, and diplomatic interactions that defined this era, offering readers a clear view of how the medieval Church navigated international relations. With detailed indexing and a robust bibliography, this book is indispensable for students, academics, and those passionate about the history of the Mediterranean and the role of the Vatican in shaping global affairs. Gain a deeper appreciation for the complex legacy of the Church in the Eastern Mediterranean and the lasting impact of its historical diplomacy.