jim meseda is live in seoul. jim, what is the latest you can tell us? >> hi, kelly. more threats and more tension, that's for sure. in the latest message that was clearly meant for u.s. consumption, the north korean military spoke of deploying a number of mobile nuclear devices to strike the united states. once again, this latest threat was conditional, however, this time, unstopping what north korea calls, quote, an aggressive war games or a number of war games next to its territory which, of course, it sees as a rehearsal for an invasion. this comes an kim jong unreactivated a north blah tone yumm reactor. meanwhile, intelligence suggests that the north has moved a medium range what they call musudan missile towards a launch site east of us. this kind of missile has yet to be tested, but could prove to be potentially dangerous and hit united states targets as far away as guam, an important base in the pacific. in reaction to that, the u.s. is, as you mentioned in your lead, i believe, beefing up its anti-missile defenses on guam now saying that it's taking the thre