PYONGYANG, North Korea — U.S. Secretary of State Mike Pompeo traveled to North Korea on Wednesday to finalize plans for a historic summit between President Donald Trump and the North’s leader, Kim Jong Un. U.S. officials said Pompeo will also press North Korea for the release of three detained American citizens, whose imminent release Trump has been hinting at. Pompeo discussed the agenda for a potential summit in a meeting with Kim Yong Chol, vice chairman of the central committee of North Korea’s ruling party. Later, at a lunch of poached fish and duck hosted by Kim Yong Chol, Pompeo said the senior official had been a great partner in working to make the summit a success. “For decades, we have been adversaries.