Despite U.S. President Donald Trump's reassurance that Japan and the United States are "very unified" on North Korea, concerns persist that Pyongyang may refuse to rid itself of medium-range missiles and that Washington might agree to wind back its military presence on the Korean Peninsula at the behest of the North's leader Kim Jong Un.During two-day talks through Wednesday with Japanese Prime Minister Shinzo Abe in Palm Beach, Florida, Trump pledged to continue levying the "maximum pressure" of crippling sanctions on North Korea backed by the threat of military action until it gives up it…READ FULL ARTICLE