In Indian Missions abroad, he has served as India's Permanent Representative to the Conference on Disarmament, Geneva (2004-2007), Ambassador to Algeria; Counsellor for trade access and development cooperation at the Indian Mission to the European Union in Brussels, First Secretary in the Permanent Mission of India to the United Nations, Geneva and Second Secretary in the Embassy of India in Paris.
[2] In the Ministry of External Affairs (MEA), New Delhi, he has served as head of the Americas Division from 2000 to 2004, head of the unit on Multilateral Economic Relations, Staff Officer to the Foreign Secretary, Deputy Secretary for Disarmament Affairs and Desk Officer for Bangladesh.
He was member of U.N. Secretary-General's Advisory Board on Disarmament Matters (2005–07), and Rapporteur of the U.N. Commission on Human Rights, Geneva (1986–87).
He was a Fellow at the Weatherhead Center for International Affairs,[3] Harvard University from 1998 to 1999 where he worked on a research project to study new parameters of India's foreign policy and to delineate India's strategic and technological environment through the year 2010.
[citation needed] He was appointed Director General of the Institute for Defence Studies and Analysis (IDSA) in September 2015.