Many, including several of the president’s top advisers, are less excited. Some have expressed trepidation not only that the summit, scheduled to take place next week in Hanoi, may not yield big results. They worry, too, that Trump, eager to declare victory on the world stage, could make big concessions in exchange for empty promises of denuclearization…

Inside the administration, concern about the upcoming summit has come from predictable skeptics, including national security adviser John Bolton, a longtime opponent of diplomacy with North Korea, but also from unexpected corners. Secretary of State Mike Pompeo, the man charged with leading the negotiations, has expressed frustration to allies about the lack of diplomatic progress and voiced concern that his boss will get outmaneuvered, according to a source with direct knowledge of the conversations. Other top officials, such as former Defense Secretary James Mattis, simply worked to keep as much distance from the negotiations as possible.

“There is not optimism in the administration,” said Ian Bremmer, founder and president of the Eurasia Group. “Pompeo is deeply skeptical that we are going to get anything of substance on denuclearization from Kim Jong Un, and Pompeo believes the North Koreans are just playing for time.”