I'm surprised no one yet mentioned the historical dustup between the Khazars on one side, and the Rus and Persians on the other. Okay, I suppose I just did.

To go further (and I'm just at a point of rank speculation with this, being too lazy to have done any research), but I suspect even that contretemps runs deeper. There's an obvious association between Tartaria and Russia. There's a less well-known association between the Persians (ie, Iran) and the Aryans. That's where the name "Iran" itself comes from.

My speculation is that the word "tartarian" derives ultimately from "aryan". Say the two out loud. If correct, that points towards a deeper, obscured connection between Russia and Persia, and why they worked together against the Khazars.

It would also go a long way to explain why the entire (Khazarian) Establishment wets it's pants every time Russia and Iran get on the phone together. "It's happening again!"