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- adjective Of or pertaining to
from Wiktionary, Creative Commons Attribution/Share-Alike License
Obviously, the question on everyone's mind, up until now, when there had been only a seismic signature, was whether, in fact, there had been a fissional, fissionable device.
But as of now, they really have to get out of not one, but two fissional material programs, and convince us, I think, and the world they've done so.
This whole thing really got started in October when Assistant Secretary Kelly went in to confront the North Koreans with the fact they had a second nuclear program for obtaining fissional material, enriched uranium, and they admitted it.
Also, if they were going to put nuclear weapons on ballistic missiles, they really need some technology that is not all that simple in terms of getting them to detonate and the like, but clearly, they are threatening something disastrous, and presumably, they hope that having the fissional material alone will make them sufficiently credible to be able to blackmail us, and they're working very hard at that.