In the days leading up to the Washington summit between South Korean President Moon Jae-in and U.S. President Donald Trump, the tension in Seoul was hard to escape. Fears of an open clash between the two leaders, of a handshake that went on too long, or of a hostile early morning tweet directed at Moon were widespread. But when a senior national security advisor to Moon met a group of American visitors after the first day of talks, he was visibly relieved. The dinner between Moon and U.S. President Donald Trump went so well, he recounted with a slight smile, that it was extended 35 minutes.