U.S. Defense Secretary Leon E. Panetta speaks at the opening of the International Institute for Strategic Studies' (IISS) 11th Asia Security Summit in Singapore on Saturday, June 2, 2012. (AP Photo/Jim Watson, Pool)

Photo by: Jim Watson

U.S. Defense Secretary Leon E. Panetta speaks at the opening of the International Institute for Strategic Studies' (IISS) 11th Asia Security Summit in Singapore on Saturday, June 2, 2012. (AP Photo/Jim Watson, Pool)