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 4 weeks 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.