CNN The Lead With Jake Tapper January 6, 2016 21:17:00
Thought and that the next step would probably be some miniaturization of a warhead and putting it on top of the -- on top of a missile. i think the problem is sooner or later we are going to face a north korea with a deliverable nuclear weapon. and i think we're going to have a very serious problem. and i'd like to also say even if it's not successful, you know, a lot of tests -- i mean, the purpose of testing is to test. if it's unsuccessful they will have learned a lot. and they'll be back again the next day trying to perfect it. so we have a big problem here. >> precisely. jamie, let's talk...