THE two day official visit of the Vietnamese prime minister, Nguyen Tan Dung to India in the last week of October came within weeks after president Pranab Mukherjee’s visit to Hanoi. Before the Indian president’s visit, the Indian external affairs minister, Sushma Swaraj, was also in Hanoi. In fact, for the last couple of years, there have been frequent exchanges of high level exchange of visits. The Indian president’s visit to Vietnam in mid September coincided with Chinese president, Xi Jinping’s trip to India.