CE has made often made comments such as calling for the liberation of the Caucasus from colonial Russian rule, an so on, but you are right tough, religion has surrplanted secular nationalism in the region.
About the Pankisi I remember Umar al-Shishani being mocked by other Chechen jihadis...
This has nothing to with what I just said, you said that Syria's Christians were imported by Assad I am just pointing out how bizarre your own words are.
IS has been trying to export the secterian conflict(and thus it's presence) outside of Syria/Iraq, the eastern part of the Arabian peninsula with it's large number of Shias is the obvious choice