KGB's agents are human, OpenAI's agents are not. It's an important distinction because humans are responsible for their behaviour, while AI agents are not.

You cannot try an AI agent in a court of law, despite the anthropomorphising work the word "agent" is doing.

Exactly. It’s still just software, which someone programmed and deployed to do specifically dangerous/malicious things. I feel like we already have legislation and case law surrounding this.