The First Christianization of the Rus ' was reported by Patriarch Photius in the 860s .
Despite recurrent military conflicts , the relations between the Rus ' and Byzantium seem to have been predominantly peaceful .
The First Christianization of the Rus   was reported by Patriarch Photius in the 860s .
Despite recurrent military conflicts , the relations between the Rus ' and Byzantium seem to have been predominantly peaceful .