New Delhi: India's National Security Advisor Ajit Doval, in his first public interaction, called Tuesday for a collective global convergence on terrorism and said that a UN convention on terrorism could not be formulated for the past 13 years as Pakistan had objected to “freedom fighters” being termed terrorists.

Addressing the Munich Security Conference meet here, Doval also said that India considers strong democracy as the best tool to foster security both within the country and in the region.