The Christianization of the Rus' Khaganate is supposed to have happened in the 860s and was the first stage in the process of Christianization of the East Slavs which continued well into the 11th century. Despite its obvious historical and cultural significance, records detailing the event are frustratingly hard to come by, and it seems to have been forgotten by the time of Vladimir's Baptism of Kiev in the 980s.
Read more about Christianization Of The Rus' Khaganate: Byzantine Sources, Other Primary Sources, The Outcome, See Also, Notes and References