In the 10th century , Prince Vladimir I , who was converted by missionaries from Byzantium , embraced Christianity as the official Russian religion .
In Russia , the prominence and authority of various religious groups is closely tied to its political situation .
In the 10th century , Prince Vladimir I , who was converted by missionaries from Byzantium , embraced Christianity as the official Russia religion .
In Russia , the prominence and authority of various religious groups is closely tied to its political situation .