Those are different things.
Nuclear war is exactly the kind of thing for which we do have excellent expertise. Unlike for AI safety which seems more like bogus cult atm.
Nuclear power would be the best form of large scale power production for many situations. And smaller scale too in forms of emerging SMR:s.
Pretty much the same method was used to shut down Rauma-Repola submarines https://yle.fi/a/3-5149981
After? They get the godbox. I have no idea what happens to it after that. Modelweights are stored in secure govt servers, installed backdoors are used to cleansweep the corporate systems of any lingering model weights. Etc.