I feel like the word sovereignty is a bit odd in the modern world. Classically I believe it meant that a nation (etc) could stand alone and defend itself against reasonable (i.e. non suicidal) encroachments from its neighbors, and therefore it had sole discretion over policies within its borders. I think that is pretty clearly not the case today for most “sovereign” nations today? I wonder why the word took on a different meaning? Is it just rude to call someone a vassal state these days?