[ad_1] SEOUL: South Korean President Moon Jae-in called Friday on the United States to move towards the nuclear-armed North's demands for a declaration the Korean War is over, as the allies pursue increasingly different approaches towards Pyongyang . Washington has shied away from a formal announcement that the 1950-53 conflict, when hostilities ceased with an armistice rather than a peace treaty, has ended, saying that the North must first take more steps towards giving up its atomic arsenal. For its part Pyongyang - which long insisted it needed nuclear weapons to defend itself against a possible US invasion - has pledged only to work towards denuclearisation "of the Korean peninsula", demanding simultaneous moves by Washington in return, with a peace declaration its first priority. "The North has stopped all nuclear and missile tests, dismantled its only nuclear test site and is now dismantling its missile engine test facilities, and is promising to take steps t...