2020: ‘Inheriting the Past: Trajectories of Single Parties in Arab Republics,’ in: Cavatorta, Francesco and Lise Storm (eds.): Routledge Handbook of Political Parties in the Middle East and North Africa, (London: Routledge), forthcoming.
2020: 'Projecting Stability to the South: NATO's New Mission?' in: Eugenio Cusumano and Stefan Hofmaier (eds.): Projecting Resilience Across the Mediterranean, (Palgrave Macmillan), pp. 37-62, (with Jeffrey A. Larsen).
2016: ‘Officers and Regimes: The Historical Origins of Political-Military Relations in Middle Eastern Republics,’ forthcoming in Holger Albrecht, Aurel Croissant, and Fred Lawson (eds.): Armies and Insurgencies in the Arab Spring, (Philadelphia: University of Pennsylvania Press).
2014: ‘The 2011 Elections in Tunisia: Institutionalizing Uncertainty?’ (with Jana Warkotsch) in Khalil al-Anani and Mahmoud Hamad (eds.): Elections and Democratization in the Middle East, (Basingstroke: Palgrave Macmillan), pp. 9-34.
2013: ‘Zwischen Revolution und Religion: Die Parlamentswahlen und das entstehende Parteiensystem in Ägypten’ [Between Revolution and Religion: Parliamentary Elections and the Emerging Party System in Egypt], in: Holger Albrecht and Thomas Demmelhuber (eds.): Revolution und Regimewandel in Ägypten, (Baden-Baden: Nomos), pp. 87-109 (in German).
2010: ‘Konzeptualisierungsstrategien, Regimetypologien und das Problem des Kontinuums’ [Strategies of Conceptualization, Regime Typologies, and the Continuum Problem], (with Jana Warkotsch) in: Holger Albrecht and Rolf Frankenberger (eds.): Autoritarismus Reloaded, (Baden-Baden: Nomos), pp. 61-77 (in German).
2009: ‘Yemen’de Siyasal slam’ [Political Islam in Yemen], in: Aysegül Komsuoglu and Gül M. Kortuoglu Eskisar (eds.): Siyasal Islam’ın Farklı Yüzleri, (Istanbul: Profil), pp. 55-75 (in Turkish, translation by Iris Müller).
2008: ‘Staat, Stämme und politischer Islam im Jemen: Die Islah Partei zwischen Regime und Opposition’ [The State, Tribes, and Political Islam in Yemen: The Islah Party Between Regime and Opposition], in: Holger Albrecht and Kevin Koehler (eds.): Politischer Islam im Vorderen Orient: Zwischen Sozialbewegung, Opposition und Widerstand, (Baden-Baden: Nomos), pp. 165-182 (in German).
Opinion pieces and policy publications
2019: ‘Al-siyasa al-kharijiya li-ra’is Trump: Ay dalalat li-hilf shamal al-atlasi “al-NATO”?’ [The Foreign Policy of President Trump: What Implications for NATO?], Dirasat 6(1): 59-73 (Arabic).