Turning that into an agent which builds its own hydrogen bomb using what amount to seized resources and to do it covertly at a pace that is faster than human agencies notice is a different sort of thing, but the middleware to do that sort of agent directed project is rapidly developing as well, and there is strong economic incentive for self-interested actors to pursue it. For a very brief moment in time, a huge amount of shareholder value will be created, and then suddenly destroyed.

A large-scale nuclear exchange is no longer the worst case scenario, in point of fact.

Assuming we don't hit those information-theoretic barriers, and we don't develop a host of new safeguards which nobody at the present time seems interested in developing.