The Department of Energy built the National Ignition Facility partly because hydrogen fusion is at the heart of many of its nuclear weapons and because fusion is a potential power source that produces far less—and far less dangerous—nuclear waste than nuclear fission.
What enabled the big boost in fusion energy announced this week?
https://arstechnica.com/science/2022/12/what-enabled-the-big-boost-in-fusion-energy-announced-this-week/