- International Relations - A Guide to Theory and Practice (2021)
- Democracy Promotion or Neocolonialism? (2019)
- The Global Politics of Poverty and Inequality (2018)
- The Case for a Pluralistic World (2016)
- Foreign Policy: Theories, Actors, Cases (2014)
- China's Rise: Power, Money, Values (2012)
- International Relations: Critical Concepts (2012)
- Europe and Democracy: The EU and the Global Spread of Liberal Norms (2009)
- The European Union and Democracy Promotion (2007)
- Democratic Governance and International Relations: US Foreign Policy and Regime Change in the Western Balkans (2006)
Edited Books
- New Voices on International Relations Theory: Critical Engagements (2021)
- The SAGE Handbook of Research Methods in Political Science and International Relations (2020)
- The Routledge Handbook of International Relations Theories (2019)
- The SAGE Handbook of International Relations (2018)
- International Relations Theory and the End of History: After the Cold War (2015)
- Theories of International Relations: Pluralism and Global Governance (2013)
- European Union Enlargement and the Global Spread of Liberal Norms (2011)
- Political Theory and International Relations: Realism, Pluralism, and Global Justice (2011)
- Critical Realism and Democratic Governance: Exploring New Perspectives (2007)
Journal Articles
- "The Case for a Pluralistic World: Revisiting the Liberal Project in the 21st Century" (2021)
- "Democracy and the Global Spread of Liberal Norms" (2019)
- "The Global Politics of Poverty and Inequality: A Critical Realist Perspective" (2018)
- "China's Rise and the Liberal Peace: A Critical Realist Perspective" (2016)
- "The EU and the Global Spread of Liberal Norms: A Critical Realist Perspective" (2014)
- "US Foreign Policy and Regime Change in the Western Balkans: A Critical Realist Perspective" (2012)
- "The European Union and Democracy Promotion: A Critical Realist Perspective" (2010)
- "Democratic Governance and International Relations: A Critical Realist Perspective" (2008)