(VOVworld) — President of the Senate of Cambodia Say Chhum began an official visit to Viet Nam on Tuesday. The 3-day visit is being made at the invitation of National Assembly Chairman Nguyen Sinh Hung. The Cambodian Senate leader will hold talks with his counterpart NA Chairman Hung and later meet Party General Secretary Nguyen Phu Trong, President Truong Tan Sang and Prime Minister Nguyen Tan Dung.