Chuck Hagel

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U.S. Defense Secretary Chuck Hagel, left, listens to Japanese Defense Minister Itsunori Onodera, right, at the start of their meeting Saturday, May 31, 2014 in Singapore. Hagel traveled to Singapore to attend the 13th Asia Security Summit. (AP Photo/Pablo Martinez Monsivais, Pool)

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U.S. Defense Secretary Chuck Hagel walks to his seat as he arrives for the official luncheon at the 13th Asia Security Summit, Saturday, May 31, 2014 in Singapore. (AP Photo/Pablo Martinez Monsivais, Pool)

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U.S. Defense Secretary Chuck Hagel, left, talks with Japanese Defense Minister Itsunori Onodera, right, as they wait for South Korean Defense Minister Kim Kwan-jin to arrive to begin their meeting, Saturday, May 31, 2014 in Singapore. Hagel traveled to Singapore to attend the 13th Asia Security Summit. (AP Photo/Pablo Martinez Monsivais, Pool)

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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)

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U.S. Defense Secretary Chuck Hagel, left, listens to Lt. Gen. Wang Guanzhong, right, China's deputy chief of General Staff, at 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)

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U.S. Defense Secretary Chuck Hagel, left, meets with Malaysian Defense Minister Hishammuddin Hussein 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)

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U.S. Defense Secretary Chuck Hagel, left, meets with Lt. Gen. Wang Guanzhong, right, China's deputy chief of General Staff, 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)

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U.S. Defense Secretary Chuck Hagel, left, meets with Malaysian Defense Minister Hishammuddin Hussein 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)

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U.S. Defense Secretary Chuck Hagel, left, meets with South Korean Defense Minister Kim Kwan-jin, right, Saturday, May 31, 2014 in Singapore. Hagel traveled to Singapore to attend the 13th Asia Security Summit. (AP Photo/Pablo Martinez Monsivais, Pool)