Hanoi, Nov 3 (IANS) National Security Advisor (NSA) Ajit Doval called on Vietnamese President To Lam on Tuesday and thanked him for his 'steadfast support in strengthening the India-Vietnam Enhanced Comprehensive Strategic Partnership'. Taking to social media platform X, the Indian Embassy in Vietnam said: "During his recent visit to Vietnam, India's National Security Advisor Ajit Doval paid a courtesy call on His Excellency Mr.