Nuclear terrorism might be a thing, but I seriously doubt that the easiest way to do it is nuclear suicide vests. Miniaturizing nuclear warheads is a pain. If you were going to do something like that, you’d be better off doing something akin to a truck bomb.

Much more likely would be a dirty bomb. Just a regular bomb with some nuclear material that it spreads. The nuclear material isn’t the bomb itself, but used exclusively for the exposure effects.

I’m not that surprised. Radiation poisoning is a special kind of torture for EVERYONE. Shit would immediately invalidate any goodwill or sympathy for whomever uses them.

It would also be dangerous and expensive for the people making it.