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Faculty & Research

Associate Professor Leonard C. Sebastian


  • BA (Hons), York
  • MA, York
  • PhD, ANU

Research Interests

  • Indonesian politics
  • Indonesian defence and security policy
  • Foreign policy trends
  • Political Islam and militant movements in Indonesia
  • Indonesian anti-terror legislation
  • Singapore-Indonesia relations
  • Regional security developments in Southeast Asia with special reference to the ASEAN Security Community concept.

Professional Activities

  • Member, Advisory Panel to the Government Parliamentary Committee on Defence and Foreign Affairs (GPC-DFA)
  • Freeman Fellow (April 2005); Visiting Fulbright Scholar (September – December 2005)
  • Member, Experts Group on the Security of East Timor in the Regional Context sponsored by the Instituto de Estrategicos e Internacionais (IEEI), Lisbon and the Ministry of Foreign Affairs, Portugal (2001-2002)
  • Part-time Consultant for the Singapore Trade Development Board (now known as International Enterprise Singapore) (June 2000-2001)

Realpolitik Ideology: Indonesia’s use of military force (Singapore: ISEAS, 2006, 560 pages) “New Islamic Streams in Indonesia” (forthcoming); “Dissecting the Nexus between Islam, Politics and Democracy in Indonesia: The phenomenon of the rise of the Prosperous Justice Party (PKS)” (forthcoming); “Perceiving Indonesian approaches to International Relations theory” in Why is There no Non-Western International Relations Theory, special edition of International Relations of the Asia Pacific edited by Amitav Acharya and Barry Buzan (forthcoming; co-author); “Domestic stability priorities, ‘Balance of interests’ and Indonesia’s management of Regional Order” in Joseph Chinyong Liow and Ralf Emmers eds., Order and Security in Southeast Asia: Essays in honour of Michael Leifer (London: Routledge, 2005); “Terrorism and Transnational Crime in Southeast Asian International Relations”, in Donald E. Weatherbee et al, International Relations in Southeast Asia: The Struggle for Autonomy (Lanham, MD: Rowman & Littlefield, 2005), Chapter 6, pp. 156-186; “The Indonesian dilemma: How to participate in the War on Terror without becoming a National Security State”, in Kumar Ramakrishna and See Seng Tan, eds., After Bali: The Threat of Terrorism in Southeast Asia (Singapore: Institute of Defence and Strategic Studies/World Scientific Publishing Co Pte Ltd, 2004): pp. 357-382.


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Associate Prof. Leonard C. Sebastian

Office: B4c - 53
Phone: 6790 4402

Teaching/Research Programme

S6018 State and Politics in Modern Indonesia

Coordinator, Indonesia Programme

Media expertise

Indonesian politics, military affairs, security and foreign policy; Factors contributing towards terrorism and militant movements in Indonesia; Indonesian anti-terrorism legislation; Singapore-Indonesia relations; ASEAN Security Community concept