Geopolitically, it's another aftershock of sectarian blowback that stems from Stalin's carving up of central Asia and gaming ethnic enclaves against one another à la England's "Divide and Conquer" colonial strategy. Of course, this was only a recent interruption of centuries of ethnic clashes in the area.

This is a decent summary of the current conflict and some history, admittedly done by an Azeri who is usually pretty reliable.

Also, Armenians have a very politically active and media-savvy diaspora in the face of both Azeri and Turkish denials of the Armenian Genocide, including a recent and bizarre campaign in New York, and even an even more bleakly humorous attempt at Azeris to not only deny the Armenian Genocide, but to claim that they are, in fact, the victims of genocide themselves.

Needless to say, it's about to get interesting.

It's really frustrating watching us being forced to work with such shitty allies who, by the luck of the draw, happen to inhabit desirable regions in certain geopolitical atmospheres. I mean, there's no saints in this world, but, for fuck's sake this guy was greeted as a hero when he was extradited back to Azerbaijan after brutally decapitating an Armenian while participating in a NATO seminar...

I have been a soldier for 14 years now, but I cannot give an answer whether I would kill if I were a civil person. I haven't thought on the question whether I would kill Armenians if I were civil [sic]. My job is to kill all, because until they live we will suffer.