“Eight months after the first summit, the two countries have not even defined what ‘denuclearization’ means. They’re ‘still at the starting point of the lengthy and arduous process,’ Daryl Kimball, the executive director of the Arms Control Association, in Washington, told me. ‘Trump cannot afford to squander the time spent getting to this point and come away with just pictures and pleasantries with Kim. This summit can and must emphasize substance over pageantry.'” The New Yorker’s Robin Wright previews Trump/Kim 2: Will Trump Give Away Too Much to North Korea—and Get Too Little?

+ A quick review from AP: US-North Korea roller coaster ties add to summit uncertainty.

+ Here’s the latest on the Hanoi summit from CNN.