Dude, half of your first analysis was about how Russia would have to get to Armenia to invade Azerbaijan. I’m simply pointing out that’s incorrect. As for your comments about Turkey, that’s what I already added as their main problem.

Quite a good analysis except you forgot Russia borders Azerbaijan itself so could just attack them directly, and also already has military bases in Armenia and a way to bring in soldiers through air. Their biggest problem wouldn’t be those aspects, it would be Turkey intervening because it has a military alliance with Azerbaijan. And because Turkey and Azerbaijan share a genocidal hate for Armenians.