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South Korean President Park Geun-Hye (R) speaks as Vietnamese Prime Minister Nguyen Tan Dung (L) listens to during a joint press conference after their meeting ahead of the ASEAN-Republic of Korea Commemorative Summit at a hotel in Busan on December 10, 2014. The Association of South East Asian Nations (ASEAN) summit will be held in the southeastern port city of Busan on December 11-12. AFP PHOTO / JUNG YEON-JE / POOL (Photo credit should read JUNG YEON-JE/AFP/Getty Images)

South Korean President Park Geun-Hye (R) speaks as Vietnamese Prime Minister Nguyen Tan Dung (L) listens to during a joint press conference after their meeting ahead of the ASEAN-Republic of Korea Commemorative Summit at a hotel in Busan on December 10, 2014. The Association of South East Asian Nations (ASEAN) summit will be held in the southeastern port city of Busan on December 11-12.  AFP PHOTO / JUNG YEON-JE / POOL        (Photo credit should read JUNG YEON-JE/AFP/Getty Images)