A Russian kamikaze drone on Wednesday flew into NATO air space and detonated near a Romanian village, Ukrainian news reports said, but official Bucharest said the fact of the strike wasn’t confirmed and that they would check.
Ukrainian social media video recorded in the river port city of Izmail, opposite Plaura, showed an orange flash lighting up the night horizon and a booming blast on the Romanian side of the river. Flames and smoke reaching hundreds of meters into the sky were visible following the explosion. A Russian kamikaze drone strike against Izmail had been in progress at the time.
East ukraine is composed of 90% ethnic russians and the dividing line was imposed on them by a foriegn power, I dont think ‘sovereign’ applies. I could see that for West ukraine but it doesnt seem like Russia is interested in that either.