Vietnamese Prime Minister Nguyen Tan Dung (R) shakes hands with Venezuelan President Nicolas Maduro in Hanoi, capital of Vietnam, on Aug. 31, 2015. Maduro arrived in Hanoi on Sunday for a two-day visit to Vietnam. (Xinhua/VNA)

General Secretary of the Communist Party of Vietnam Nguyen Phu Trong (R) meets with Venezuelan President Nicolas Maduro in Hanoi, capital of Vietnam, on Aug. 31, 2015. Maduro arrived in Hanoi on Sunday for a two-day visit to Vietnam. (Xinhua/VNA)

General Secretary of the Communist Party of Vietnam Nguyen Phu Trong (R) shakes hands with Venezuelan President Nicolas Maduro in Hanoi, capital of Vietnam, on Aug. 31, 2015. Maduro arrived in Hanoi on Sunday for a two-day visit to Vietnam. (Xinhua/VNA)

Vietnamese Prime Minister Nguyen Tan Dung (2nd R) holds talks with Venezuelan President Nicolas Maduro (2nd L) in Hanoi, capital of Vietnam, on Aug. 31, 2015. Maduro arrived in Hanoi on Sunday for a two-day visit to Vietnam. (Xinhua/VNA)