http://freebeacon.com/national-security/moscows-connection-to-the-islamic-state/
Second, it is obvious to almost everyone that “Russia is not interested in a victory over ISIS.†Moscow’s foreign policy at present is about confrontation with the West in general and the US in particular, and both Vladimir Putin and many Russian commentators have suggested that the US and NATO not ISIS is Russia’s main enemy.
Stanislav Belkovsky, a Russian opposition political analyst, said that Putin “knew about the terrorist acts in Paris in advance because he has a broad network of agents in ISIS,†a network created and expanded by former KGB chief and Russian foreign minister Yevgeny Primakov. Vladimir Milov of Russia’s Democratic Choice Party has said the same.
And fourth, Russian and Soviet arms have turned up in ISIS. Russian propagandists say they came from Ukraine or somewhere else, but the leaders of the LNR and DNR would not be sending arms to anyone else without the direct approval of Moscow. That reality clearly suggests a Moscow connection.
http://windowoneurasia2.blogspot.de/2015/12/fsb-defectors-claims-about-moscows-ties.html?m=1