I think if you trace back long enough a lot of the ancestors of Azerbaijanis are probably Armenians, Georgians, Circassians, and other long standing Caucasian p

I think if you trace back long enough a lot of the ancestors of Azerbaijanis are probably Armenians, Georgians, Circassians, and other long standing Caucasian peoples who were assimilated by both force and persuasion to some degree or other into Persian influenced Turkic tribes. Likewise in their rise to a regional linguistic group the Armenians assimilated and absorbed other groups (like much of the Caucasian Albanian population). I’m not sure what that means in the grand scheme of things but I tend to be skeptical of the idea that land exclusively ought to belong to one group when a region historically has had many groups whose populations and histories are intertwined. Of course the nature of the nation state being what it is and the history of blood letting in the region, as a practical matter even if you discard ideals of who the land “ought” to belong to, a peaceful solution is tricky