I was Lala Lajpat Rai Chair Professor in Political Science at Panjab University, Chandigarh before joining South Asian University, New Delhi, as Professor in International Relations in June 2018. My key research interest are the theory and practices of geopolitics; with special reference to Polar Regions and the Indian Ocean Region. 
From 1993 to 1995, I pursued post-doctoral research on “Polar Regions in International Relations” at the Scott Polar Research Institute, University of Cambridge, England, with Nehru Centenary British Commonwealth Fellowship and Leverhulme Research Grant. A major output of this research was the The Polar Regions: A Political Geography (Chichester: John Wiley, 1996).
I have received several visiting professorships and fellowships including Curtin University, Australia; University of Wurzburg, Germany; India-China Institute, The New School, USA; The University of Adelaide, Australia; University of Cambridge, England; University of Durham, UK; Institute of Southeast Asian Studies (ISEAS)-Yusof Ishak Institute, Singapore (2010-2012), Columbia University Institute for Scholars, Paris; Faculty of Law, University of Sydney; Ben Gurion University of the Negev, Israel; and Henry L. Stimson Centre, Washington D.C., USA. 

I am the co-author of Partitions: Reshaping Minds and States (Routledge, 2005, 2015); and co-editor of Environmental Sustainability from Himalaya to the Ocean: Struggles and Innovations in China and India, Springer, 2017; Euro-Asia at the Crossroads: Geopolitics, Identities and Discourse (Shipra Publications, 2011); Geopolitical Orientations Regionalism, and Security in the Indian Ocean (Routledge Revivals, 2015); Energy Security and the Indian Ocean Region (Routledge Revivals, 2015); The Security of Sea Lanes of Communication in the Indian Ocean Region (Routledge Revivals, 2015). My recent co-authored books are: Climate Terror: A Critical Geopolitics of Climate Change (Palgrave Macmillan 2015, with Timothy Doyle) and Climate Change and the Bay of Bengal: Emerging Geographies of Hope and Fear (Institute of South East Asian Studies, Singapore, with Vijay Sakhuja). 

Elected as the co-chair of Research Committee on Political and Cultural Geography (RC 15) of International Political Science Association (IPSA) for two terms (2006-2009; 2009-2012), I also served on the Steering Committee of the IGU Commission on Political Geography from 2004 to 2012. I am a Lead Author for Chapter 10: (Asia) of the Working Group II Contribution to the IPCC Sixth Assessment Report (2019-2021). I have visited 51 countries in connection with various academic assignments.