U.S. Defense Secretary Robert Gates, left, and his South Korean counterpart Kim Tae-young participate in a joint news conference at South Korea's defense ministry in Seoul, South Korea, Thursday, Oct. 22, 2009. Gates said Thursday that North Korea continues to pose a grave threat to international peace and pledged to protect South Korea with Washington's full military might, including its nuclear capabilities. AP Photo logo AP Photo 28 months ago

U.S. Defense Secretary Robert Gates, left, and his South Korean counterpart Kim Tae-young participate in a joint news conference at South Korea's defense ministry in Seoul, South Korea, Thursday, Oct. 22, 2009. Gates said Thursday that North Korea continues to pose a grave threat to international peace and pledged to protect South Korea with Washington's full military might, including its nuclear capabilities.