Amitav Acharya is Deputy Director and Head of Research at the Institute of Defence and Strategic Studies, Nanyang Technological University, Singapore. His areas of specialisation include regionalism and multilateralism, Asian regional security and international relations theory. Mely Caballero-Anthony is Assistant Professor and IDSS-FORD Project Coordinator of Non-Traditional Security at the Institute of Defence and Strategic Studies, Nanyang Technological University, Singapore. Her areas of specialisation include regionalism and multilateralism, non-traditional security, human security, comparative politics and international relations of Southeast Asia. Ralf Emmers is Assistant Professor and Deputy Head of Studies at the Institute of Defence and Strategic Studies, Nanyang Technological University, Singapore. His research interests include security studies, international institutions and regionalism in Asia Pacific.