According to this article(don't know how much truth to it), Hundreds of Russians are being developed secretly to Syria to continue the war declared by Vladimir Putin against the Islamic State, according to the data revealed by the journalistic investigation of the Russian web site Fontanka.
About 400 Russian fighters have been secretly sent to the front line under the leadership of a man named "Wagner", says the story.
Dozens of Russian mercenaries have been killed so far in the war in Syria, but Russia prohibited the private companies of mercenaries, the issue has not been known, says Russian web site Fontanka.
According to the Russian website, Wagner has already recruited a 1,000 mercenaries for the Russian funding mercenary brigade, which was set up by a dissolved private army called "Slavs Soldiers", whose members are veterans of the Russian army.
The same private power it is said that joined -unofficially - from the Kremlin to participate in the business of annexation of Crimea to Russia after the nazi coup in Ukraine.
The private he army's recruiting Russian ex-soldiers, who have orders not to reveal to anyone that joined in the force.