[quote=@Odin] I can't really say for sure. You make some good points - CBRN isn't your everyday asset so having access to one of these facilities might already have been a stroke of luck for the Kim's. On the other hand, they're pretty good at security (in it's most brutal form) and much of what you have said is already there - they've produced this crap before so research requirements are... limited? The problem was delivery of the payload, not the payload itself. [/quote] Well they got nuclear detonation, yes. They never quite got "miniaturized nuke," though, as in "one you could put on an ICBM." So presumably they were working on that crucial development alongside their rocket tests.