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You can minimise the tech to a point but there are issues with energy source density and running lasers doesn't come energy cheap.
Edit:Unless you initiate a self sustaining fusion reaction that you allow to become uncontained, essentially arming the bomb at base.
This would likely still require a pretty hefty reactor at origin, so portable nuclear reactors on military bases?
Grumpy_Git
Good point, the first thermonuclear ‘device’ in the 1950s was the size of a small building though. The question might be whether they can miniaturise the first laser/d-t stage and use that to initiate a cascade of larger fusion stages, but my grasp of physics isn’t remotely sufficient to know if that’s possible.