The former Asian chief of the U.S. National Security Council has urged President Trump to mediate between Seoul and Tokyo... as tensions escalate between the neighbors following Japan's export curbs.<br />In an op-ed to the Washington Post this week,... Evan Medeiros advised Trump to call on the leaders of South Korea and Japan to start dialogue to resolve the issue.<br />He said Seoul-Tokyo tensions also pose a threat to Washington's alliance network, regional prosperity and the global supply network.<br />He also explained the spat could cause the U.S. significant economic and diplomatic losses in the long run.<br />