end of last month. and only at the last minute did north korea invite south korean journalists to plan for the ceremony in north korea for the dismantling of its main nuclear testing site. that is expected to happen this week. cnn's been invited, but a u.s. defense official tells cnn that the ceremony is nothing more than a p.r. stunt, that the nuclear testing site was mostly destroyed by six previous north korean nuclear tests including the most recent and powerful one in september of last year. david and christine? >> yeah. reports that were it was ready to collapse. the fact that there were no nuclear inspectors there, with all due respect to will ripley and company, tells you a lot. thank you. >> and no experts allowed to go with the journalists. it's journalists. they'll be doing their best reporting there, no question. live now to washington and digital director zachary wolf. let's talk here about the north