Those micro countries like Azerbaijan are not even considered big enough to be a threat. A handful of missiles are enough to neutralize each of them.
It's just that these countries have stupid politicians who are being abused by bigger powers and they think that they can gain some interest while everyone else is too buys to look at what they are doing. For example Baku is trying to take the area linking it to Nakhchivan but they won't be allowed to finish this ever simply because it is a very strategically important corridor that acts as one of Russia's main lifelines not to mention an important corridor to Iran since it is one of the routes used to link Iran to both Russia and Europe.
The misinformation Baku got was that the UNSC would busy Iran too much to distract it from their adventures. What they didn't count on was our military moving to the borders and the trigger fingers itching to take back Nakhchivan and possibly Azerbaijan (originally Aran) and reattach them to the motherland...
Russia maybe even more dependent on Turkey, for exports of natural gas and crude oil. But I agree with your observations on Naxçıvan. It is strategically located. If Azerbaijan invades the area between Naxçıvan and Azerbaijan proper, then there are two benefits:
1. There can be a direct natural gas /crude oil pipeline between Azerbaijan and Turkey (the current one goes through Georgia)
2. Any possibility of a natural gas pipeline from Iran to Europe, through Armenia can be sabotaged
And I am 100% sure that the war will not stop unless Turkey and Azerbaijan conquers the southern portion of Armenia, which separates Naxçıvan from rest of Azerbaijan.