“Terrorism During Civil War,” in M. Abrahms (ed.), The Routledge Companion to Terrorism Studies: New Perspectives and Topics (London: Routledge, 2023).

“The Appeasement Puzzle and Competition Neglect,” in F. Attinà, L. Bozzo, M. Cesa, and S. Lucarelli (eds.), Eirene and Athena: Studies in International Politics in Honor of Umberto Gori (Florence: Firenze University Press, 2022). (proofs)

“Do Birds of a Feather Flock Together? Rebel Constituencies and Civil War Alliances,”  International Studies Quarterly, 2022 (with L. Balcells and C. Chen). (proofs)

Conflict Among Rebels: Why Insurgents Fight Each Other (New York: Columbia University Press, 2020).

“Ethnic Conflict and the Limits of Nonviolent Resistance,” Security Studies, 2020. (proofs)

“Wars Within Wars: Why Windows of Opportunity and Vulnerability Cause Inter-rebel Fighting in Internal Conflicts,” International Security, 2018. (proofs with errata corrige)

“The Economic Costs of Civil War: Synthetic Counterfactual Evidence and the Effects of Ethnic Fractionalization,” Journal of Peace Research, 2017 (with S. Costalli and L. Moretti). (proofs)

“Oil, Federalism, and Third-party Intervention: An Assessment of Conflict Risk in Iraqi Kurdistan” in Filippo Andreatta and Emanule Castelli (eds.), Solutions and Failures in Identity-based Conflicts (Trento: FBK Press, 2015) (with M. Morelli). [book chapter]

“Do Foreign Occupations Cause Suicide Attacks?” Journal of Conflict Resolution, 2014 (with S. Collard-Wexler and M. G. Smith). (proofs)

“The Turkey-KRG Energy Partnership:Assessing Its Implications,” Middle East Policy, 2014 (with M. Morelli). (proofs)

Allies and Airpower in Libya,” Parameters, 2012 (with E. D. Borghard).

“Referendum, Response, and Consequences for Sudan: The Game Between Juba and Khartoum,” World Bank Policy Research Working Paper 4684, 2008 (with I. Elbadawi and G. Milante).

“Un’Analisi dell’Efficacia della Violenza Indiscriminata in Guerra di Contro-guerriglia.” In S. Costalli and F. Moro (eds.), La Guerra nello Stato, Milan: Vita e Pensiero, 2010. [book chapter]

“Partition as a Solution to Ethnic Conflict,” International Spectator, 2008.

“A Plan for Military Intervention in Darfur,” African Security Review, 2007.

Policy commentary/analysis

“What Star Wars can tell us about rebel movements,” Vox, Mischief of Factions, 8 December 2017.

A provocative article says the Islamic State is a mystery. Here’s why that’s wrong.Washington Post, Monkey Cage, 27 August 2015.

“America Must Destroy IS…But How?” The National Interest, 15 August, 2014.

(With E. D. Borghard) “Why American Air Power Won’t Save Iraq from ISIS,”The National Interest, 24 June, 2014.

(With E. D. Borghard) “Bombing Can Wait,” The National Interest, 12 September, 2013.

(With E. D. Borghard) “Obama’s Syria Dilemma,”The National Interest, 30 August, 2013.

(With M. Morelli) “Let Turkey and Kurdistan Get Closer,”The National Interest, 31 October, 2013.

“Transatlantic Economic Relations: the State of the Partnership and Prospects for Future Cooperation,” Policy brief for the Italian Senate, Istituto Affari Internazionali: Rome, 2007 (abridged version published in Freedom and Union, 2007).

(With G. Hufbauer) “After Doha: Evolution or Revolution in the World Trading System?” Western Center for Economic Research, University of Alberta, 2007.

(With G. Hufbauer) “Learning the Correct Lesson about Protectionism,” Economic Perspectives, 2007.

Book reviews

Review of  Richard N. Juliani’ Little Italy in the Great War: Philadelphia’s Italians on the Battlefield and Home Front, Italian Americana, 2021.

“Review Essay: War and Peace in a Hidden Gem of Italian American Literature,” Italian Americana, 2020 (proofs).

Review of P. Krause’s Rebel Power, Political Science Quarterly, 2018 (proofs).

Conflict Resolution and the Everyday Politics of International Intervention,” Journal of International Organizations Studies, 2015 (review of S. Autesserre’s Peaceland:  Conflict Resolution and the Everyday Politics of International Intervention).

Review of F. Christia’s Alliance Formation in Civil Wars,” H-Diplo/ISSF Roundtable Reviews, 2013.

“Moral and Strategic Dimensions of Humanitarian Military Intervention,” International Spectator, 2008 (review of M. W. Doyle and N. Sambanis, Making War and Building Peace: United Nations Peace Operations).

“Lessons for Peacebuilders,” International Spectator, 2007 (review of T. Seybolt, Humanitarian Military Intervention: The Conditions for Success and Failure).