Vietnamese President Truong Tan Sang, left, and Chinese President, right, attend a signing ceremony at the Great Hall of the People in Beijing, Wednesday, June 19, 2013. (AP Photo/Mark Ralston, Pool)

... more 

Vietnamese President Truong Tan Sang, left, and Chinese President, right, attend a signing ceremony at the Great Hall of the People in Beijing, Wednesday, June 19, 2013. (AP Photo/Mark Ralston, Pool) less 

1 / 7
Associated Press
Thu, Jun 20, 2013 3:37 PM EDT