Iran Attacked Its Arab Neighbors -- Their DNA Explains Why [View all]

Interesting factoids about stark cultural differences backed up by largely unmixed DNA, although both populations are mixed. They are simpkly distinct from each other.

While this is interesting stuff, I think Iran's reluctance to take on Turkey and Azerbaijan is rootd more in history than genetic or cultural separation. The pre British Empire history of the region tells of multiple wars fought between the Turks and Persuans, each one pretty much curb stomping the other and nearly ruining themselves in the process. I think that's the reason Iran has so far limited itself to strictly Arab nations plus Israel. They don't want to provoke the Turks if they don't have to.