South Korean Foreign Minister Cho Hyun will meet US Secretary of State Marco Rubio and Japanese Foreign Minister Toshimitsu Motegi in Atlanta on Friday, as Seoul seeks to manage a series of sensitive issues in its alliance with Washington. The three-way meeting, to be held on the sidelines of the Group of 20 foreign ministers’ gathering, comes a little more than a month after the ministers met during the UN General Assembly in New York. They are expected to discuss North Korea’s recent ballistic