... 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) ...
... Secretary Pompeo looks forward to going to North Korea in the near future, most likely after our Trading relationship with China is resolved. In the meantime I would like to send my warmest regards and respect to Chairman Kim. I look forward to seeing him soon!

Pompeo was in Trump's office when Trump tweeted the above. Staff in the State Department was briefing foreign ambassadors on Pompeo's upcoming talks, planned for next week, when Trump stepped in. The decision was clearly a surprise.

Trump is suddenly binding the continuation of Korea talks to a trade deal with China. Such a deal is unlikely to happen anytime soon as China is convinced that it can win a tariff war, while the Trump administration overestimates the economic pressure it can create. That Trump now connects these two issues might mean that he has given up the "denuclearization" game.

Peter Lee, aka Chinahand, sees a larger plan behind the latest Trumping: to demonstrate to Kim Jong-un that China is hindering Kim's plans for a peace agreement and for economic development; then, when China will finally be pushed into open adversary status to the U.S., Kim Jong-un will have to chose and will end up in the U.S. camp.