NEW : This means the product will ship as received by the manufacturer, sealed, with all advertised components, and with the manufacturer warranty. A U.S. official says there are signs the North Koreans are preparing a launch . China and the United States agree a rocket launch would be destabilizing . North Korea moves a long-range rocket to a launch pad in Dongchang-ri , an official says .
NEW : South Korea says it will retaliate if provoked . A U.S. official says there are signs the North Koreans are preparing a launch . China and the United States agree a rocket launch would be destabilizing . North Korea moves a long-range rocket to a launch pad in Dongchang-ri , an official says .