(VOVworld) – India’s President Pranab Mukherjee began a four-day official visit to Vietnam on Sunday at the invitation of President Truong Tan Sang. He will be accompanied by Minister of State for Petroleum & Natural Gas Dharmendra Pradhan, a number of parliamentarians, Secretary to the President Omita Paul, Deputy Foreign Minister Anil Wadhwa, and Indian ambassador to Vietnam Preeti Saran.