Unless you don't consider it major, I think you're missing the Nagorno-Karabakh conflict that just happened 6 months ago, with a huge ability to spiral out of control, cause a humanitarian crisis, which Turkey will definitely get involved in supporting Azerbaijan. There is now really bad blood between ethnic Armenians and Azerbaijanis, and Armenians still live in Nagorno-Karabakh, currently only safeguarded by Russian troops. That situation is still a tinderbox until an actual resolution is achieved and generations have passed.