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.
Assuming this is just another mistake (likely), it seems like since Russian arms sometimes end up hitting NATO soil, that the reasonable course of self-defense is to extend their air defenses and shoot down arms that come near their territory. You can’t know that the drone will go off target until it does, so you just have to shoot down anything heading in the general direction, even if it’s likely targeting Ukraine.