SEONGNAM: South Korean President Moon Jae-in, right, and his wife Kim Jung-sook wave before leaving for the United States at Seoul Airport in Seongnam, South Korea, Monday, May 21, 2018. For a few months, everything seemed to be clicking for South Korean President Moon Jae-in as he pieced together crucial nuclear negotiations between the U.S. and North Korea following a year of intense animosity. But he now enters a White House meeting with President Donald Trump with his status in the diplomatic driver’s seat in doubt. (AP/PTI)