I wish I could understand Russian, this documentary seemed to be a good one.
There are English subtitles, the series is somewhat Russia-biased, but it's all true. Here is a documentary by mostly the same makers, it has French sous-titres.
Christianity and Islam are both sides of the same coin. There isn't that much of a difference between them. What matters is how they are implemented, which depends on the people, not the religion itself.
+1