Why isn't North Korea testing nukes? What are the signals and signs that precede a test?  Jeffrey and Aaron talk testing indicators, the logistics of detonating a nuclear device in North Korea, and the proper use of the Chatham House Rule... The team talks about the impact of Michael Krepon on the field and on us personally. He will be greatly missed, and his importance and mentorship in the field of arms control cannot be understated.  Support us over at Patreon.com/acwpodcast!