unite nations china foreign minister thursday call north korea go dangerous direction nuclear program say negotiations way crisis pyongyang weapons development wang yi also tell annual u.n. general assembly china commit denuclearization korean peninsula new nuclear weapons north south border elsewhere northeast asia urge unite state honor four commitment apparent reference aug. statement u.s. secretary state rex tillerson say washington seek collapse change north korean government accelerate reunification peninsula send military north border urge dprk go along dangerous direction wang say refer north korea acronym official name democratic people republic korea call upon party play constructive role ease tensions still hope peace must give negotiation way deserve every effort party meet half way address legitimate concern wang make mention speech u.s. president donald trump announcement new sanction thursday open door wide blacklist people entities business north korea include ship trade network china north korea main trade partner back successive round unite nations sanction north korean nuclear bomb test repeatedly say oppose unilateral sanction especially long-arm jurisdiction chinese entities individuals china urge north korea go 'dangerous direction