South Korea, Japan and the US seek to coordinate their responses to North Korea and other regional security challenges while reinforcing economic and defense cooperation, at a trilateral foreign ministers' meeting planned for Tuesday, said Seoul's Foreign Ministry. According to the Foreign Ministry, Foreign Minister Cho Hyun will meet with US Secretary of State Marco Rubio and Japanese Foreign Minister Motegi Toshimitsu on Tuesday evening on the sidelines of the NATO summit in Turkey. "At the me