U.S. Defense Secretary Chuck Hagel attends the opening ceremony of the Shangri-La Dialogue held in Singapore, May 31, 2013. The 12th Shangri-La Dialogue began in Singapore Friday. (Xinhua/Then Chih Wey) (srb)

Indonesian Defense Minister Purnomo Yusgiantoro (L) talks with Timor-Leste Prime Minister and Minister for Defence and Security Kay Rala Xanana Gusmao during the opening ceremony of the Shangri-La Dialogue held in Singapore, May 31, 2013. The 12th Shangri-La Dialogue began in Singapore Friday. (Xinhua/Then Chih Wey)(srb)

Singaporean Prime Minister Lee Hsien Loong (L) and U.S. Defense Secretary Chuck Hagel (2nd L) attend the opening ceremony of the Shangri-La Dialogue held in Singapore, May 31, 2013. The 12th Shangri-La Dialogue began in Singapore Friday. (Xinhua/Then Chih Wey) (bxq)

Vietnamese Prime Minister Nguyen Tan Dung delivers a keynote speech at the Shangri-La Dialogue held in Singapore, May 31, 2013. The 12th Shangri-La Dialogue began in Singapore Friday. (Xinhua/Then Chih Wey) (bxq)

Vietnamese Prime Minister Nguyen Tan Dung delivers a keynote speech at the Shangri-La Dialogue held in Singapore, May 31, 2013. The 12th Shangri-La Dialogue began in Singapore Friday. (Xinhua/Then Chih Wey) (bxq)

Japanese Minister of Defence Itsunori Onodera, Australian Defence Minister Stephen Smith, Canada's Minister of National Defense Peter MacKay and the U.S. Defense Secretary Chuck Hagel (L to R) attend the opening ceremony of the Shangri-La Dialogue held in Singapore, May 31, 2013. The 12th Shangri-La Dialogue began in Singapore Friday. (Xinhua/Then Chih Wey) (bxq)