To help fight bot disinformation, I think there needs to be an international treaty that requires all AI models/bots to disclose themselves as AI when prompted using a set keyphrase in every language, and that API access to the model be contingent on paying regain tests of the phrase (to keep bad actors from simply filtering out that phrase in their requests to the API).
It wouldn’t stop the nation-state level bad actors, but it would help prevent people without access to their own private LLMs from being able to use them as effectively for disinformation.