U.S. Defense Secretary Chuck Hagel, left, listens to Lt. Gen. Wang Guanzhong, right, China's deputy chief of General Staff, during the start of their meeting, Saturday, May 31, 2014 in Singapore. Hagel warned an international security conference Saturday that the U.S. "will not look the other way" when nations such as China try to restrict navigation or ignore international rules and standards. (AP Photo/Pablo Martinez Monsivais, Pool)