They don’t need the west though they just need Turkey. With Russias military already wrapped up, that’s all they really need, Russia really can’t afford to to fight Turkey.

If anything were to happen, the west would let it go until Russia were beaten and then send a peace keeping force to occupy Armenia to make sure Turkey and Azerbaijan don’t mess it up anymore than it would already be. Thus giving Armenia a sense of security, and also in the end the Nagorno-Karabakh area probably gets given to Azerbaijan in exchange for more security guarantees.