Russia is taking out the trash in Syria and there's nothing "complicated" about it.
Re my post with a link that writes that 2000 Islamists mainly Chechens are forming a joint front against Russia and this http://www.almoslim.net/node/242646 that 50 Saudi Clerics are urging support by any means against Russia.
As you know there are more than three million Muslims in Moscow. That makes Moscow the largest Muslim city in Russia and the largest Muslim capital in Europe, with “ethnic Muslims” now forming a quarter of some of the capital’s districts and becoming an increasingly visible part of the city’s public space
http://windowoneurasia2.blogspot.se/2015/09/more-than-three-million-muslims-now-in.html
Since FSB is shipping islamists to Syria to fight with (not against ISIS/Daesh) http://www.novayagazeta.ru/inquests/69364.html
it is going to be complicated indeed.
The Soviet method of Provokatsiya http://20committee.com/2014/03/29/understanding-provocation/ will cause severe https://en.wikipedia.org/wiki/Blowback_(intelligence)