I feel like at some point, UUVs will be able to disable one part of the nuclear triad. A submarine with nuclear warheads is such a big ticket item that no country can reasonably have a lot of them. The US has 14, Russia 11. The entire world fleet is probably in the 30s.

A UUV that can find one and follow it indefinitely could be able to neutralize it and would be, presumably, much cheaper and easier to build. How hard could it be to eventually find and track every ballistic missile submarine with them?

I’m sure there are things I’m not understanding (how communications work, whether such a sub would be able to launch ICBMs even after being torpedoed, etc.) but it seems like this should have major strategic ramifications eventually.