Here is some of the info from last year I as able to find doing a google search. It was the Beslan School Massacre I was referring to. In this report it stated about the arabs involved with the operation...
FROM 2004:
Investigator suggests foreign intelligence involved in Russia school (terrorist) attack
http://www.freerepublic.com/focus/f-news/1289658/posts
If you dig into the Beslan files here in the Free Republic files, you will see that Russia does not come out as lily white in it.
As they do not in the Theater massacre either.
I am not at all sure that I would be able to say who was guilty of what, I do know, that over the years, russia has not been a country that I would care to claim citizenship in.
Do some googles that are along the line of:
russia muslim connection
russia al qaeda connection
russia nazi muslim connection
russian terrorist training camps
russian bases on cuba
russian and china bases at cuba
cuba terrorist training camps
change the order of the words and you will get different results.