That's a fascinating concept. If an AI could treat a city as a living system, the defenses would constantly reassess threats and adapt, which would make it almost impossible to breach. The key would be ensuring the AI’s logic aligns with human values and that it never overreacts to a false alarm. It would require a disciplined framework to keep it from becoming a self‑sabotaging organism. In theory, it could be a strong strategic advantage, but the risk of unintended consequences is significant.