effort to promote dialogue between the united states and north korea amid increasing threats from chung yang a chinese premier cho japanese premier shinzo of a south korean president moon j. and held a summit in chengdu china north korea says it will take unspecified action if sanctions against it are not lifted by the end of the year. they called it a new era of the 3 kingdoms as police of china japan and south korea met for talks but the one leader setting the agenda for summit was not at the table. north korea's kim jong il after the latest tests at a missile launch site earlier this month regional powers are concerned pyongyang is about to undo efforts to ease tensions. we agreed that peace on the korean peninsula was in the common interest of the 3 countries we also agreed to make efforts together to help promote north korea u.s. dialogue for denuclearization and peace. the possibility of north korea turning into serious nuclear threat has become more tangible after february summit between kim and u.s. president on the trump failed to deliver any results. to come and threat of a north k