
High-ranking North Korean party and military official Choe Ryong Hae, center left, shakes hands with Chinese Ambassador Liu Hongcai as Choe departs for China as a special envoy of North Korean leader Kim Jong-un, at Pyongyang airport, North Korea Wednesday, May 22, 2013. (AP Photo/ Kim Kwang Hyon)

High-ranking North Korean party and military official Choe Ryong Hae, center left, shakes hands with Chinese Ambassador Liu Hongcai as Choe departs for China as a special envoy of North Korean leader Kim Jong-un, at Pyongyang airport, North Korea Wednesday, May 22, 2013. (AP Photo/ Kim Kwang Hyon)

A clerk counts Chinese yuan banknotes at a bank in Hefei, in central China's Anhui province, on Wednesday, Sept. 15, 2010. (AP Photo)

Clad in leather and flanked by fans of Harley-Davidson motorcycles, Wisconsin Gov. Scott Walker helps foster the love for the Milwaukee-based classic in China.

The Japan Maritime Self-Defense Force patrols the Senkaku Islands, which China calls the Diaoyu Islands, in the East China Sea. China is trying to strengthen its claim on tiny, uninhabited, Japanese-controlled islands by raising questions about the much larger Okinawa chain that is home to more than 1 million Japanese along with major U.S. military installations. Tokyo has issued a "stern protest." (Associated Press)

The Japan Maritime Self-Defense Force patrols the Senkaku Islands, which China calls the Diaoyu Islands, in the East China Sea. China is trying to strengthen its claim on tiny, uninhabited, Japanese-controlled islands by raising questions about the much larger Okinawa chain that is home to more than 1 million Japanese along with major U.S. military installations. Tokyo has issued a "stern protest." (Associated Press)

Clad in leather and flanked by fans of Harley-Davidson motorcycles, Wisconsin Gov. Scott Walker helps foster the love for the Milwaukee-based classic in China.

China's combat drone is described as "a stark example of China's broad investment in advanced military technologies."

China's combat drone is described as "a stark example of China's broad investment in advanced military technologies."