American Allies in Times of War: The Great Asymmetry. Oxford: Oxford University Press, 2013.
Going to War? Trends in Military Interventions. Montreal and Kingston: McGill-Queen’s University Press, 2016. (co-edited with H. Christian Breede)
The Future of Extended Deterrence: NATO and Beyond. Washington, D.C.: Georgetown University Press, 2015. (co-edited with Andreas Wenger)