Nguyen Tan Dung, Prime Minister of Vietnam listens to U.S. President Barack Obama speak during a 10-nation Association of Southeast Asian Nations (ASEAN) summit in Rancho Mirage

Nguyen Tan Dung, Prime Minister of Vietnam listens to U.S. President Barack Obama speak during a 10-nation Association of Southeast Asian Nations (ASEAN) summit in Rancho Mirage

Nguyen Tan Dung, Prime Minister of Vietnam listens to U.S. President Barack Obama speak during a 10-nation Association of Southeast Asian Nations (ASEAN) summit in Rancho Mirage, California February 15, 2016. Obama will press leaders from Southeast Asia to boost trade and back a common stance on the South China Sea. REUTERS/Mike Blake - RTX273AK

May 8, 2017 3:43 PM (UTC+8)