As the security environment has deteriorated in East Asia, Japan's dependency on the U.S. nuclear umbrella and the bilateral "nuclear bond" have been strengthened through under-the-table discussions, according to a Japanese government memo recently obtained by Kyodo News and interviews with officials.In February, the administration of President Donald Trump unveiled its nuclear policy guideline "Nuclear Posture Review," emphasizing the U.S. security commitment to defend allies including Japan which is under nuclear threat by North Korea."Potential adversaries must understand that the United…READ FULL ARTICLE