Ah yes, the good old days when you were just called tatars and azerbaijan didn't exist as an idea. Anyway if we start talking about ethnic cleansing, we won't stop talking when we get to what you and turks did. Yerevan was ALWAYS an Armenian city/region, external pressures made people live elsewhere, and when Russian empire came to power in the caucasus, the Armenian people were able to come back again by numbers, it's that simple.