| 2025 | “Double flipsiding: the liberalisation and illiberalisation of “Security”” Social Semiotics 1–14. |
| 2024a | “Raus aus den Silos!” Zeitschrift für Internationale Beziehungen 31(2): 16–45. (with Andreas Hasenclever)
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| 2024b | Not anxious enough: The discursive articulation of ontological security in the European Parliament. Review of International Studies, 1–19 (with Franziskus von Lucke) |
| 2024c | Talking Past while Needing One Another: The Complex and Ambiguous Relationship between the EU and Türkiye. Siyasal: Journal of Political Sciences, 33(2), 187-204. (with Damla Cihangir Tetik) |
| 2023a | Zwischen Furcht und ontologischer (Un-)Sicherheit: eine Analyse europäischer Zusammenhaltsnarrative in Zeiten der Polykrise. integration, 46(4), 300-317. (with Franziskus von Lucke) |
| 2023b | 'The EU, Korea, and conflict transformation through regional integration. Asia Europe Journal (with Moosung Lee). |
| 2023c | 'Global justice and EU climate policy in a contested liberal international order', International Affairs, 99 (6), pp. 2221–2239 (with Franziskus von Lucke). |
| 2023d | 'Spatial Imaginations of ‘Turkey’ and ‘Europe’: An Introduction', Uluslararasi Iliskiler, Vol. 20, No 77, pp. 5-16. |
| 2023e | ‘Progressive and Regressive Securitisation: Covid, Russian Aggression and the Ethics of Security’, Central European Journal of International and Security Studies 17 (2), 22-43. DOI10.51870/PXRR4789. |
| 2023f | ‘Introduction: Political Logics and Academic Rationalities of Securitisation and International Crises’, Central European Journal of International and Security Studies 17 (2), 4-20. DOI 10.51870/PEOW5184 (with Andrey Makarychev). |
| 2023g | ‘La fin de la société internationale ? La guerre de Russie et le défi à l’ordre international’, Revue Défense Nationale 861, 71-84 |
| 2022 | 'Russia's War and the Future of European Order', in: Transatlantic Policy Quarterly 21 (1), 11-20. |
| 2021 | ‘The EU in a Changing World Order: In Defence of Normative Power 2.0’, in: Marmara Journal of European Studies 29 (1), 1-20. |
| 2019 | 'Transforming Identity in International Society: The Potential and Failure of European Integration', in: Comparative European Politics, 17, 512-29. DOI 10.1057/s41295-019-00170-9. |
| 2018 | 'Responding to Crises: Europe and Southeast Asia', in: Asia Europe Journal 16 (2), 115-24. DOI 10.1007/s10308-018-0505-x. |
| 2017 | 'Diplomacy, Papacy, and the Transformation of International Society', in: The Review of Faith & International Affairs 15 (4), 31-38. DOI: 10.1080/15570274.2017.1392142. |
| 2016a | 'Postmodern EU? Integration between Alternative Horizons and Territorial Angst', in: Journal of Common Market Studies 54 (1), 136-51 (with Stefan Borg). DOI 10.1111/jcms.12327. |
| 2016b | 'Introduction: The EU, East Asian Conflicts and the Norm of Integration', in: Asia-Europe Journal 14 (4), 353-66 (with Moosung Lee). DOI 10.1007/s10308-016-0459-9. |
| 2016c | 'Klimakämpfe: Eine komparative Studie zur Versicherheitlichung von Klimawandel', in: Zeitschrift für Internationale Beziehungen 23 (2), 112-43 (with Franziskus von Lucke and Zehra Wellmann). DOI 10.5771/0946-7165-2016-2-112. |
| 2015 | 'Solidarisation and its Limits: the EU and the Transformation of International Society', in: Global Discourse: An Interdisciplinary Journal of Current Affairs and Applied Contemporary Thought, 5 (3), 341-55 (with Bettina Ahrens). DOI: 10.1080/23269995.2015.1053189. |
| 2014a | 'Framing und Versicherheitlichung: Die diskursive Konstruktion des Klimawandels', in: Zeitschrift für Friedens- und Konfliktforschung 3 (2), 203-32 (with Julia Grauvogel). ISSN: 2192-1741. |
| 2014b | 'What’s at Stake in Securitising Climate Change? Towards a Differentiated Approach', in: Geopolitics 19 (4), 857-84 (with Franziskus von Lucke and Zehra Wellmann). DOI 10.1080/14650045.2014.913028. |
| 2014c | 'The Devil is in the 'Domestic'? European Integration Studies and the Limits of Europeanization in Turkey', in: Journal of Balkan and Near Eastern Studies 16 (1), 1-10 (with Basak Alpan). DOI 10.1080/19448953.2013.864180. |
| 2014d | 'Setting the Limits: Discourse and EU Foreign Policy', in: Cooperation and Conflict 49 (3), 319-333. ISSN 0010-8367. DOI 10.1177/0010836713494997. |
| 2013 | 'Normative Power as Hegemony', in: Cooperation and Conflict 48 (2), 194-210. DOI 10.1177/0010836713485387. |
| 2012 | 'Not Quite “Sui Generis” Enough: Interrogating European Values', in: European Societies 14 (4), 522-39. DOI 10.1080/14616696.2012.724577. |
| 2011 | 'The Changing Nature of International Institutions in Europe: The Challenge of the European Union', in: Journal of European Integration, 33 (2), 117–138 (with Ian Manners and Richard G. Whitman). ISSN: 1477-2280 (electronic) 0703-6337 (paper). |
| 2010a | ‘Conflicts and the Politics of Human Rights Invocations’, Berghof Handbook Dialogue Series 9, 47-54 (with Emily Pia). ISSN 1616-2544. |
| 2010b | 'The Cyprus Conflict and the Ambiguous Effects of Europeanization', in: The Cyprus Review. A Journal of Social, Economic and Political Issues 22 (2), 175–86 (with Nathalie Tocci). |
| 2008a | 'Reconfiguring Spaces of Confllict: Northern Irland and the Impact of European Integration', in: Space & Polity 12 (1), 47-62 (with Katy Hayward). ISSN 1356-2576. DOI 10.1080/13562570801969432. Reprinted in Chris Rumford (ed.), Citizens and Borderwork in Contemporary Europe (London: Routledge), ISBN: 978-0415-47225-8. |
| 2008b | 'Christianity, Christendom, Europe: On the Role of Religion in European Integration', in: Arès No. 59/23 (1), 29-41 (with Mariano Barbato). ISSN 0181-009X, ISBN 978-2-86561-324-0. |
| 2008c | 'Michel Foucault and the Problematization of European Governance', in: International Political Sociology 4(4), 266-8 (Forum contribution). ISSN 1743-8586. DOI 10.1111/j.1749-5687.2008.00049_2.x. |
| 2008d | 'Traditions of Citizenship and the Securitisation of Migration in Germany and Britain', in: Citizenship Studies 12 (6), 565-81 (with Vicki Squire). ISSN 1362-1025. DOI 10.1080/13621020802450643. |
| 2007 | 'Expanding Europe: The Ethics of EU-Turkey Relations', in: Ethics & International Affairs 21 (4), 415-22. ISSN 0892-6794. |
| 2006a | 'The European Union and Border Conflicts: The Transformative Power of Integration', in: International Organization 60 (3), 563-93 (with Mathias Albert and Stephan Stetter). DOI 10.1017/S0020818306060218. |
| 2006b | 'The Paradoxes of Europe's Borders', in: Comparative European Politics 4 (2), 235-52. DOI 10.1057/palgrave.cep.6110083. |
| 2005a | 'A Useful Dialogue? Habermas and International Relations', in: Review of International Studies, 31 (1), pp. 127-140 (with Jill Steans). ISSN 0260-2105. |
| 2005b | 'Turkey, Europeanisation and Civil Society: Introduction', in: South European Society and Politics, 10 (1), pp. 1-15 (with Apostolos Agnantopoulos and Alper Kaliber). ISSN 1360-8746. |
| 2005c | 'Turkey, the European Union and Security Complexes Revisited', in: Mediterranean Politics 10 (2), 167-180. ISSN 1362-9395 |
| 2005d | 'Constructing the Self and Changing Others: Problematising the Concept of 'Normative Power Europe'', in: Millennium: Journal of International Studies 33 (3), 613-636. ISSN 0305-8298. |
| 2004 | 'Europe's Others and the Return of Geopolitics', in: Cambridge Review of International Affairs 17 (2), pp. 319-335. ISSN 0955-7571. |
| 2002a | 'Analysing European integration, reflecting on the English School: scenarios for an encounter', in: Journal of Common Market Studies 40 (1), pp. 43-67 (with Richard G. Whitman). ISSN 0021-9886. |
| 2002b | 'Why the EU can nonetheless be good for Cyprus', in: Journal on Ethnopolitics and Minority Issues in Europe 2 (2), pp. 1-18. ISSN 1617-5247. |
| 2001 | 'Europe as a discursive battleground: European Integration Studies and discourse analysis', in: Cooperation and Conflict 36 (1), pp. 5-38. ISSN 0010-8367. |
| 1999a | 'Turkey and the European Union: where to from here?', in: Survival 41 (1), pp. 41-57 (with Barry Buzan). ISSN 0039-6338. |
| 1999b | 'Constructing threat, constructing political order: on the legitimation of state and economic community in western Europe', in: Journal of International Relations and Development 2 (1), pp. 29-49. ISSN 1408-6980. |
| 1999c | 'Speaking 'Europe': the politics of integration discourse', in: Journal of European Public Policy 6 (4), pp. 598-613. ISSN 1350-1763. Reprinted in Thomas Christiansen, Knud Erik Jørgensen and Antje Wiener (eds.) (2001), The Social Construction of Europe, London et al.: Sage, pp. 85-100. ISBN-7619-7265-X. Reprinted in Mette Eilstrup-Sangiovanni (ed) (2006), Debates on European Integration: A Reader, London: Palgrave, 420-36. ISBN1-4039-4104-1. Reprinted in Spanish as „El Habla “Europea”: La Políticas del Discurso de Integracion‟, Revista Tercer Milenio 11 (11/2007), 33-40. ISSN 0717-229X. |
| 1999d | 'Riding the AM-track through Europe, or: The pitfalls of a rationalist journey through European integration', in: Millennium: Journal of International Studies 28 (2), pp. 355-369. ISSN 0305-8298. |
| 1998a | 'Perspektivenwechsel: Warum ein 'postmoderner' Ansatz für die Integrationsforschung doch relevant ist', in: Zeitschrift für Internationale Beziehungen 5 (1), pp. 139-148. ISSN 0946-7165. |
| 1998b | 'Which Europe? Conflicting models of a legitimate European order', in: European Journal of International Relations 4 (4), pp. 409-445 (with Markus Jachtenfuchs and Sabine Jung). ISSN 1354-0661. |
| 1997 | 'International ethics and European integration: federal state or network horizon?', in: Alternatives: Global, Local, Political 22 (3), pp. 287-312. ISSN 0304-3754. |
| 1996 | 'Postmoderne und europäische Integration: Die Dominanz des Staatsmodells, die Verantwortung gegenüber dem Anderen und die Konstruktion eines alternativen Horizonts', in: Zeitschrift für Internationale Beziehungen 3 (2), pp. 255-281. ISSN 0946-7165. |