This one has been rumbling on for a while in the background, but seems to be coming to a bit of a head this year with over a hundred soldiers killed on each side during border clashes.
More concerning though is news that Azerbaijan has announced that its armed forces are being put on full combat alert.
It's probably nothing and this will just simmer back down again as it has done for the past two decades, or perhaps this time they'll actually go all out.
Given that Turkey has large support for Azerbaijan and Russia for Armenia, this could be a good proxy war for the two.
https://en.wikipedia.org/wiki/2016_A...onal_reactions