The on-again, off-again U.S.-North Korea summit is going through its multiple negotiating gambits and uncertainties. I try to help unpack the meaning of the moves and countermoves, in part through my McClatchy columns, but also on-air. I spent much of Thursday morning on CBS News and the evening with CNN International. This link http://www.snappytv.com/tc/8044593 will take you straight to the video of the segment I did with John Vause and a few other guests (Firefox or IE browser recommended for video).