U.S. Defense Secretary Robert Gates (R) shakes hands with his South Korean counterpart Kim Tae-young during Security Consultative Meeting (SCM) at the Defense Ministry in Seoul October 22, 2009. Gates said on Thursday that North Korea poses a threat to his country's allies in North Asia and promised to protect them under the U.S. nuclear deterrent. Reuters Pictures 4 weeks ago

U.S. Defense Secretary Robert Gates (R) shakes hands with his South Korean counterpart Kim Tae-young during Security Consultative Meeting (SCM) at the Defense Ministry in Seoul October 22, 2009. Gates said on Thursday that North Korea poses a threat to his country's allies in North Asia and promised to protect them under the U.S. nuclear deterrent.