Board Thread:Speculation House/@comment-27966940-20170315165354/@comment-30530552-20170316024209

31.205.75.38 wrote: I do wonder about nuclear weapons. On the one hand, they let you eradicate lots of Grimm. On the other hand, Grimm don't understand deterrence and thus won't be stopped just by nuking them over and over again, which would result in the degradation of Remnant's biosphere. Thus strategic weapons would really be only useful against other kingdoms. Tactical nuclear weapons might be useful against Grimm in limited circumstances however, as a sort of "panic button". I don't think they would consider using that form of technology, because what with how this world has limited supplies of safe land and a finite amount of resources, I doubt they would waste valuable Dust and other supplies just to make a world-destroying weapon which could potentially eradicate perfectly good land, or even make the Grimm that don't die from it more dangerous.

If we are to consider RWBY GE canon in this context (which is why I spaced it out separately), we've already seen there what unfamiliar substances can do to the Grimm, which make them even more dangerous (and a greater pain in the arse to kill). Who's to say a WMD of that kind wouldn't effectively do the same thing to them and effectively screw Remnant even more?