That depends how far back you want to go. The area they are fighting in at the moment used to have a mixed Azeri and Armenian population. In the 1920's Azeri pogroms drove the Armenians out. In the 1990's the Armenians drove the Azeris out. This new war now appears to have driven the Armenians who were living there out. The only place in the whole area that has continuously had a majority of one ethnic group is Nagorno-Karabakh itself, which has always been majority Armenian.
no one, not no one, sides with the Armenians BS claims, everyone from the UN SC downwards sides with the Azeris.
Armenias fantasy of a 100% ethnically ‘pure’ Greater Armenia is being destroyed before its eyes.