His research interests are in global governance, global environmental politics, international political economy, globalization and internationalization of public policy and international institutions. His publications include, The Compromise of Liberal Environmentalism (Columbia University Press, 2001); Global Liberalism and Political Order: Toward a New Grand Compromise?, co-edited with Louis W. Pauly (SUNY Press, 2007), as well as a number of book chapters in edited volumes and refereed articles.