U.S. Secretary of Defense Robert Gates (R) directs South Korea's Defence Minister Lee Sang-he before a bilateral meeting at the International Institute for Strategic Studies (IISS) Shangri-La Dialogue security conference in Singapore May 30, 2009. Gates warned on Saturday that the United States would not accept a nuclear North Korea and the growing threat could trigger an arms race in Asia.
REUTERS/Vivek Prakash (SINGAPORE MILITARY POLITICS)