Ph.D in South Asian Studies, School of International Studies, Jawaharlal Nehru University, New Delhi, 1992
M.Phil in Political Studies, School of Social Sciences, Jawaharlal Nehru University, New Delhi, 1987
M.A in Political Science, Madurai Kamaraj University, Madurai, Tamil Nadu, India, 1984
Sri Lankan and Maldivian studies, Peace and conflict studies, Ethnicity, Terrorism, Civil War, India’s foreign policy, and Diaspora studies
Professor of South Asian Studies, School of International Studies, JNU, since May 2003
Associate Professor of South Asian Studies, School of International Studies, JNU, 1995-2003
Chairperson, Centre for South Asian Studies, School of International Studies, JNU, 2022-2024.
Director, Pakistan Studies Programme, funded by the University Grants Commission (UGC), 2014-2016.
Editor-in-Chief of International Studies (Quarterly Journal of School of International Studies, JNU, published by SAGE), 2008-2013.
Book Review Editor of International Studies (Quarterly Journal of School of International Studies, Published by SAGE), 2004-2007.
Chairperson, Centre for South, Central, Southeast Asian and Southwest Pacific Studies, School of International Studies, JNU, 2007-2009.
Scholar-in-Residence, Department of International Relations, Stella Maris College, Chennai, Tamil Nadu, December 2018.
DAAD Guest Professor, South Asia Institute, University of Heidelberg, Germany, April-September 2016.
Visiting Fellowship at Department of International Relations, Jadavpur University, Kolkata, August 2010
Ford Foundation Visiting Fellowship at The Joan B. Kroc Institute for International Peace Studies, University of Notre Dame, Indiana, USA, Spring Semester 1998.
Kodikara Award in Strategic Studies, Regional Centre for Strategic Studies, Colombo, Sri Lanka, 1997.
Leverhulme Visiting Fellowship at Department of Politics and International Relations, University of Kent at Canterbury, UK, 1993-94.
Venugopal Rambi Ammal endowment prize for securing the University First Rank in M.A Political Science examination, Madurai Kamaraj University, Madurai, Tamil Nadu, India, 1984.
Process of International Negotiations (PIN) Group, International Institute of Applied Systems Analysis (IIASA), Laxenburg, Austria: Project on Negotiating with Terrorists, Directed by Professor I. William Zartman of Johns Hopkins University, 2006.
Member of the International Research Committee (IRC), Regional Centre for Strategic Studies (RCSS), Colombo, Sri Lanka, 2007-2010.
Country Coordinator, Project on Violence and Terrorism in South Asia, 1971-2004, Regional Centre for Strategic Studies, Colombo, 2004-2005.
Foundation for Community Transformation (Colombo) and Berghof Foundation (Berlin): Project on Rights and Power-Sharing Issues in Sri Lanka with special focus on the Indian Origin Tamil Community, 2006.
"The Grand Swap: Negotiating an End to the Kandahar Hostage Crisis", In Guy Olivier Faure and I. William Zartman, eds., Negotiating with Terrorists (London: Routledge, 2010), pp.163-196.
"Ending Internal Wars: The South Asian Experience", International Negotiation (The Hague: Kluwer Law International), Vol. 8, no.2, 2003, pp. 213-50.
"Ethnic Conflicts and Militarism in South Asia", International Studies (New Delhi: Sage Publications), vol. 39, no.2, April-June 2002, pp.103-38.
"Ethnic Peacemaking in Sri Lanka: The Politics of Autonomy Solution", In Rajat Ganguly, ed., Autonomy and Ethnic Conflict in South and South-East Asia (London: Routledge, 2012), pp. 46-87.
"The Rise of Islamist Extremism in South Asia", In South Asia 2011: Europa Regional Surveys of the World Series, 8th Edition (London: Routledge, 2011).
Coping with Disorder: Strategies to End Internal Wars in South Asia (Colombo: Regional Centre for Strategic Studies, 2000), pages 212.
"The Politics of the Status Quo in Sri Lanka", Studies in Indian Politics (New Delhi: Sage Publications), vol.12, no.1, June 2024.
"Changing Contours of India-Sri Lanka Relations", In E. Sridharan, ed., Eastward Ho? India’s Relations with the Indo-Pacific (Hyderabad, India: Orient BlackSwan, 2021), pp.167-215.
"Sri Lanka’s Quest for Maritime Identity in the Post-Civil War Period", In Chulanee Attanayake, ed., Maritime Sri Lanka: Historical and Contemporary Perspectives (Singapore: World Scientific, 2021), pp. 201-18