Øystein Tunsjø is Professor and Head of the Security in Asia Program (IFS Asia). He specializes in US-China relations, geopolitics and how global power shifts shape Europe’s defence and security.
Tunsjø holds a PhD in International Relations from the University of Wales, Aberystwyth, a cand.philol. from the University of Oslo, an MSc from the London School of Economics, 2002 and an MA from Griffith University, Australia, 2000. He has also been a visiting Fulbright scholar at Harvard and MIT.
Tunsjø is author of The Return of Bipolarity in World Politics: China, the United States and Geostructural Realism (Columbia University Press, 2018); Security and Profits in China’s Energy Policy: Hedging Against Risk (Columbia University Press, 2013) and US Taiwan Policy: Constructing the Triangle (London: Routledge, 2008). He has also co-edited four volumes and published several journal articles, such as The U.S.-China Stability-Instability Paradox: Limited War in East Asia (with Henrik Hiim, International Security, l, 50(1),152-181, 2025).