"North Korea got another earful today about its alleged torpedoing of a South Korean warship four months ago. During a meeting in the Demilitarized Zone that divides the two Koreas, the United Nations Command called the incident a violation of the 1953 armistice. The military commission proposed a joint task force to discuss what it calls the ""armistice violations."" The two sides tentatively agreed to meet again next week. The U.N. Command is the unified command structure for the multinational military forces supporting South Korea during and after the Korean War. North Korea vehemently denies involvement in the sinking, which killed 46 sailors, and demands to be allowed to send its own investigators to South Korea to examine the results. The North says there should be no problem with that if the investigation that was done was objective and scientific. The meeting took place as North Korea threatened a ""physical response"" if the U.S. and South Korea carry out joint military exercises beginning Sunday. "