They are in the process of building 200 Christian churches in Moscow right now.
^^
When I was a child and then a teen attending Catholic schools in the 1950s and the 1960s, we frequently prayed for the conversion of communist Russia. Perhaps our prayers are being answered today.
The Russian people never stopped being Christians. The commies themselves gave up on communism and to my thinking the main factor was those huge shopping districts in the centers of German and Scandinavian cities; the commie idiots who traveled were seeing ordinary middle class people buying nifty things they themselves could not own.
The new Cathedral of Christ the Savior in Moscow.