US Defense Secretary Visits Asia

U.S. Defense Secretary Leon Panetta, left, receives a plaque after he addresses cadets at the PLA Engineering Academy of Armored Forces in Beijing, China, September 19, 2012.

A cadet asks a question to U.S. Secretary of Defense Leon Panetta during his visit to the Engineering Academy of PLA Armored Forces in Beijing, China, September 19, 2012.

U.S. Defense Secretary Leon Panetta carries his lunch with cadets in the mess hall at the PLA Engineering Academy of Armored Forces in Beijing, China, September 19, 2012.

U.S. Defense Secretary Leon Panetta, left, shakes hands with China's Vice President Xi Jinping at the Great Hall of the People in Beijing, China, September 19, 2012.

U.S. Defense Secretary Leon Panetta, left, walks with Chinese Defense Minister Liang Guanglie during a ceremony at the Bayi Building in Beijing, China, September 18, 2012.

U.S. Secretary of Defense Leon Panetta, left, listens to a question from U.S. military personnel stationed at Yokota Air Base in Yokota, Japan, September 17, 2012.

A worker throws a gas bomb after clashes broke out during a protest in Phnom Penh, Jan. 3, 2014.