Chechen jihadists play a major role in the conflict in Syria. They have been fighting in Syria since 2012 and their role has been carefully planned, with direct clerical guidance from certain countries and indirect involvement by a number of intelligence agencies.
The Chechen jihadist role in the Syrian crisis has the covert support of Qatar, Saudi Arabia, and Turkey. The Qatari ties to Chechen jihadists, though relatively recent, are the most effective. The Saudis have provided clerical support, while the Turkish role is mostly logistical.
http://english.al-akhbar.com/content/chechen-jihadists-syria-case-omar-al-shishani