Are there any practical approaches to reducing the explosiveness and radioactivity of H-bombs?

Now I realize that your friend and mine, Ted Teller, did indeed create the H-bomb as a weapon of mass destruction, not as a civilian source of energy. However, given how unsuccessful "controlled nuclear fusion" has been over the last seventy years or so, I was just wondering if there might be any approaches at all to "deweaponizing" the H-bomb, and making it more usable for powering spacecraft or providing a practical energy source, as a possible practical alternative to "controlled" nuclear fusion, as we've been pursuing it, anyway. So, any ideas at all on making the H-bomb less explosive and less radioactive, hence, less of a weapon of war, and more of a civilian energy source. Any ideas?