The present collection of studies by Andrzej Poppe in many ways represents a continuation of the research brought together a quarter century ago in the author's previous Variorum volume. The focal themes are the political circumstances of the 'baptism of Russia' and the processes by which Rus' became a Christian country, an era marked by the emergence of indigenous saints in royal and monastic garb. Relations with the Byzantine world, both political and ecclesiastical, are often to the fore, but as Poppe shows, those with the West, from the Carolingians onwards, were important too. Many of the articles are provided with additional notes, and the volume includes three pieces previously unpublished in English, including an introductory survey of the Rurikid dynasty, and a major new study of the process by which Vladimir the Great became a saint.