seoul/tokyo u.s. president donald trump speech unite nations warn would totally destroy north korea threaten reinforce need pyongyang realize must give nuclear weapons south korea say wednesday hard-edged speech unite nations general assembly tuesday trump mock north korean leader kim jong un rocket man repeat ballistic missile test view speech portray firm specific stance key issue regard keep peace safety international community unite nations face office south korean president moon jae-in say statement wednesday clearly show seriously unite state government view north korea nuclear program president spend unusual amount time discuss issue presidential blue house statement say trump speech reaffirm north korea make realize denuclearization way future utmost sanction pressure say moon come power may platform engagement north korea since pyongyang sixth large nuclear test early sept. however moon say time right dialogue trump plan meet new york early wednesday u.s. time moon office say trump direct military threat attack north korea late expression concern pyongyang repeat weapons test unite state great strength patience force defend ally choice totally destroy north korea trump tell 193-member world body rocket man suicide mission regime u.s. ally japan pyongyang often threaten destroy take consistently hard line north korea push increase sanction pressure greatly appreciate president trump approach change north korea policy stance denuclearizing country call international community include china russia cooperation toward strengthen pressure north korea chief cabinet secretary yoshihide suga tell reporters suga also welcome trump reference japanese girl kidnap north korean agents 1977. plight abductees key issue japanese prime minister shinzo abe pledge rescue office emotive one japanese public north korea admit 2002 kidnap 13 japanese 1970s 1980s train spy five return japan tokyo suspect hundreds may take north korea conduct 80 missile test third-generation leader kim say need weapons protect u.s. aggression south korea unite state technically still war north korea 1950-53 korean conflict end truce peace treaty u.s. defence secretary jim mattis tell air force event wednesday effort deal pyongyang still diplomatically-led even acknowledge somber reality pentagon need military options ready u.s. ambassador u.n. nikki haley speak cbs news say wednesday unite state lot military options north korea stop short totally destroy country add step lead one want war president want war try dialogue try sanction try every diplomatic measure possibly give diplomatic efforts say u.n. security council unanimously impose nine round sanction north korea since 2006 late early month aim restrict fuel supply cut textile export key foreign exchange earner unite state urge china north korea main ally trade partner russia rein kim something trump appear allude speech outrage nations would trade regime would arm supply financially support country imperil world nuclear conflict trump tell general assembly china foreign ministry ask respond trump comment destroy north korea say u.n. resolutions clear korean peninsula issue resolve peacefully political diplomatic mean resolutions pass u.n. security council north korea reflect common consensus international community denuclearization korean peninsula ministry spokesman lu kang tell regular brief south korea say trump 's warn north korea 'firm specific