Lebaneseproud -- so how is Russia going to take and hold that territory? -- perhaps you remember their great and lasting victory in Afghanistan?
on a very closely related point -- do those images of a bare-chested Putin riding miniature ponies give you woodies, as they do for Trump and so many other wingbutt/bagnut/teabuggerer Teaflublicans?
Russia has had lustful eyes on Iran for a very long time and it wasn't for the oil, no leverage there anymore anyway. If Russia is willing and able to wipe out the bands of thugs that serve no sovereign flag, then more power to them but I wouldn't want them to grow deep roots in Iran.
For one, ISIS are on the decline. And that's before Russia's incursions have had any crucial impact. For two, ISIS don't control nearly as much oil as they did at their peak. For three, Daesh do not have the oil income they once had.