I meant as an anonymous, reverse terror weapon. I agree its not good for formal war.
Still to much hassle for too little bang. If we wanted to go that route then a small vial of some bug would be much easier.
It is one of the reasons I don't worry about dirty bombs. You have to build a big one to get any sort of effectiveness and the radioactive material is a pain to transport and conceal.
Considering they have detectors that can tell if you have had chemo in the past three months from several yards away and they use them in areas that might be a target is not much way to get enough of it in one place to make a difference.
And besides who would we used it against?
Terrorism works on free and semi-free societies not totalitarian ones.