Native language is no indicator of anyone’s desire to be united with the “mother country.” Heck, I speak English and I most assuredly don’t want to be re-united with England. And Zelensky is a native Russian speaker too. So those numbers don’t mean anything.
For most part, it is in Europe. Think of the war in Yugoslavia.
Heck, I speak English and I most assuredly don't want to be re-united with England
Not the same thing. Different in Europe/Asia/Africa where these nationalities and customs go back hundreds of years with ancestos going back up to even longer.