You can’t. Ww3 will break the supply chain for advanced transistors since it takes 1000’s of diverse inputs to make them. They will simply stop existing. Prices will skyrocket.

A few years later, as age takes out what we have running and things like planes and farm equipment stop working we’ll need to rely on whatever we can source locally.

Sadly this won’t take ww3 to happen as anything can kick off supply chain disruption. The leading cause will be population decline leading to the inability to defend your own boarders. It’s going to be China first. Don’t believe me? look at population trends.