President Trump on Friday told Secretary of State Mike Pompeo not to travel to North Korea, citing a lack of progress toward denuclearization.

I have asked Secretary of State Mike Pompeo not to go to North Korea, at this time, because I feel we are not making sufficient progress with respect to the denuclearization of the Korean Peninsula… — Donald J. Trump (@realDonaldTrump) August 24, 2018

…Additionally, because of our much tougher Trading stance with China, I do not believe they are helping with the process of denuclearization as they once were (despite the UN Sanctions which are in place)… — Donald J. Trump (@realDonaldTrump) August 24, 2018