Syria : What are the reasons behind Russia’s engagement?

Subscribe to France 24 now: http://f24.my/youtubeEN FRANCE 24 live news stream: all the latest news 24/7 http://f24.my/YTliveEN Since a week Russia is engaging more and more forces in the Syrian conflict. Moscow is showing and proving its will to fight jihadi factions and especially the Islamic State group, but what are the real reasons of the Russian engagement? FRANCE24's expert Wassim Nasr explains. Visit our website: http://www.france24.com Like us on Facebook:   / france24.english   Follow us on Twitter:   / france24_en