[creato]

> but there's no doubt that it's a dual-use technology

I do in fact doubt this. We've been building fusion weapons for 50 years very successfully, progress in fusion power plants is negligible in comparison. If fusion power plants are a dual use technology for weapons, they must be a very inefficient way to get there.

[natechols]

But we haven't actually tested those weapons in decades. Ensuring that the stockpile doesn't go bad is a huge money suck for the DOE, and it's been a key factor driving supercomputer improvements. You're right that it's very inefficient, but that has to be balanced against the political cost of setting off thermonuclear explosions regularly.