FILE - In this March 27, 2018, file photo, a man watches a TV screen showing file footage of U.S. President Donald Trump, left, and North Korean leader Kim Jong Un, right, during a news program at the Seoul Railway Station in Seoul, South Korea. Despite its feel-good emphasis on relationship-building, the first inter-Korean summit in more than a decade left a lot of question marks around the biggest and most contentious agenda item of them all: denuclearization. And that puts the ball squarely in the court of Trump, whose much-anticipated sit-down with Kim is expected to be just weeks away. (AP Photo/Lee Jin-man, File)