Vietnam's General Secretary of the Communist Party Nguyen Phu Trong (C, bottom) and other leaders attend the opening ceremony of the 12th National Congress of Vietnam's Communist Party in Hanoi, Vietnam, January 21, 2016. L-R, top: Vice Chairwoman of National Assembly Tong Thi Phong, Ho Chi Minh City's Party Chief Le Thanh Hai and Hanoi City's Party Chief Pham Quang Nghi. L-R, bottom: President Truong Tan Sang, Party Chief Nguyen Phu Trong and Prime Minister Nguyen Tan Dung. REUTERS/Kham