Kim Jong-un became the first North Korean leader to set foot in South Korea at the Panmunjom Summit in April 2018, setting the stage for President Trump’s meeting with Kim in June. Just days after the summit, Paul Haenle spoke with Tong Zhao, a fellow in the Nuclear Policy Program based at the Carnegie-Tsinghua Center for Global Policy, about the significance of the Kim-Moon meeting and its implications for China and the United States.