WASHINGTON — North Korean leader Kim Jong-un could seek renewed summitry with U.S. President Donald Trump, potentially after the U.S. midterm elections this fall, if Pyongyang adopts a "revisionist" approach to help cement its status as a nuclear-armed state, an expert said Thursday. Victor Cha, president of the geopolitics and foreign policy department and Korea Chair at the Center for Strategic and International Studies (CSIS), laid out a scenario for renewed Trump-Kim summitry in an analysis posted on the CSIS website. The analysis came amid lingering speculation that despite Trump's openness to talks with Kim, Pyongyang might have little interest in reengaging with Washington given that it has deepened economic, diplomatic and military cooperation with Moscow, and reinforced ties with Beijing. "The main driver relates to the extent to which Kim Jong-un is revisionist, and not status-quo oriented," Cha said. "If he is revisionist in his outlook, he would look to capitalize on any available opportunity to advance the core goal of cementing his status as a nuclear weapons state," he a