Yes. They've learned that it's a good idea to provide massive military and international support to terrorist regimes. To have a common enemy, Russia would have to regard Islamo-Fascists as enemies.
Hmmm ~ bet you missed that one.
If you take a real good look at their relations with Iran it has something to do with how close they are to the place ~ at the same time the Czars never quite militarily reduced the Persian Empire so that it was a reliable puppet ~ which simply means everything is much more complex than can be imagined.