Book excerpt: The crusading movement in the fourteenth century, and the support given to it by the Popes at Avignon, form the central theme of this study. By focusing on the crusading policy of the papal Curia it also illuminates other fields of Avignonese activity, such as papal taxation and relations with Byzantium, as well as offering general comments on papal objectives, approaches, and limitations. The author examines the contribution made by the Avignonese Curia to all aspects of the crusades: their initiation, their organization and financing, their control in the field, and their diplomatic repercussions ... he extends his study to cover all areas where crusading occurred--the eastern Mediterranean, Spain, eastern Europe, and Italy ... he analyses the Curia's approach to ... peacemaking between warring Christian powers, the work of the Military Orders, and western attempts to maintain a trade embargo on Mamluk Egypt. -Dust jacket.