I heard some Chechens are high ranking figures in these groups. Those guys are probably double agents of Mother Russia.
Yes, but the problem they have is that after a few years as an infiltrator they are in some cases changing their loyalty, it is extremely difficult to live that type of split life.
This is an interesting paper about the Okhrana and the Cheka:
https://etd.ohiolink.edu/!etd.send_file?accession=ohiou1398772391
Some things never change