Research on the East Slavs in the medieval period has considerably changed since the collapse of the Soviet Union. The emergence of new states forced a rethinking of many aspects of the history and culture of the early East Slavs as the subject became increasingly disentangled from the umbrella of Byzantine studies and fruitful collaboration was fostered between scholars worldwide. This book, which brings together scholars from Russia, Ukraine, western Europe and North America, of several generations, presents a broad overview of the main results of the last three decades of research and mutual collaboration. This is important work, providing a much-needed counterbalance to studies of western Europe in the period, which has been the main focus of study, with the lands of the East Slavs relatively neglected.