N. Korea Threatens U.S., S. Korea over Missile Defense Plan: North Korean officials said they would “extinguish the [U.S.] aggressors” if the United States deploys Aegis destroyers to the Sea of Japan as part of President Bush’s proposed national missile defense plan. They also promised South Korea “ruin and death” if the country buys into the U.S. defense plan. The threats were aired in North Korean reports monitored in Seoul.