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Beyond Keeping Peace: United Nations Effectiveness in the Midst of Fighting


While United Nations peacekeeping missions were created to keep peace and perform post-conflict activities, since the end of the Cold War peacekeepers are more often deployed to active conflicts. Yet, we know little about their ability to manage ongoing violence. This article provides the first broad empirical examination of UN peacekeeping effectiveness in reducing battlefield violence in civil wars. We analyze how the number of UN peacekeeping personnel deployed influences the amount of battlefield deaths in all civil wars in Africa from 1992 to 2011. The analyses show that increasing numbers of armed military troops are associated with reduced battlefield deaths, while police and observers are not. Considering that the UN is often criticized for ineffectiveness, these results have important implications: if appropriately composed, UN peacekeeping missions reduce violent conflict.

Corresponding author
Lisa Hultman is Associate Professor of Peace and Conflict Research, Uppsala University (, Department of Peace and Conflict Research, Uppsala University Box 514, 751 20 Uppsala, Sweden.
Jacob Kathman is Associate Professor of Political Science, University at Buffalo, SUNY (, Department of Political Science. 508 Park Hall, North Campus, University of Buffalo, SUNY Buffalo, NY 14260.
Megan Shannon is Assistant Professor of Political Science, University of Colorado ( Campus Box 333, Boulder, CO 80309.
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Kyle Beardsley . 2011. “Peacekeeping and the Contagion of Armed Conflict.” Journal of Politics 73 (4): 1051–64.

Alex J. Bellamy , and Paul D. Williams . 2005. “Who's Keeping the Peace? Regionalization and Contemporary Peace Operations.” International Security 29 (4): 157–95.

Max Boot . 2000. “Paving the Road to Hell: The Failure of UN Peacekeeping.” Foreign Affairs 79 (2): 143–48.

Duane Bratt . 1997. “Explaining Peacekeeping Performance: The UN in International Conflicts.” International Peacekeeping 4 (3): 4570.

David Cunningham . 2006. “Veto Players and Civil War Duration.” American Journal of Political Science 50 (4): 875–92.

David E. Cunningham 2011 Barriers to Peace in Civil Wars. Cambridge: Cambridge University Press.

David E. Cunningham , Kristian Skrede Gleditsch , and Idean Salehyan . 2009It Takes Two: A Dyadic Analysis of Civil War Duration and Outcome.” Journal of Conflict Resolution 53 (4): 570–97.

Kristine Eck . 2009. “From Armed Conflict to War: Ethnic Mobilization and Conflict Intensification.” International Studies Quarterly 53 (2): 369–88.

Kristine Eck , and Lisa Hultman . 2007. “One-Sided Violence against Civilians in Civil Wars: Insights from New Fatality Data.” Journal of Peace Research 44 (2): 233–46.

Virginia Page Fortna . 2004a. “Does Peacekeeping Keep Peace? International Intervention and the Duration of Peace after Civil War.” International Studies Quarterly 48 (2): 269292.

Virginia Page Fortna , and Lise Morjé Howard . 2008. “Pitfalls and Prospects in the Peacekeeping Literature.” Annual Review of Political Science 11: 283301.

Scott Gates , Håvard Hegre , Håvard Mokleiv Nygård , and Håvard Strand . 2012. “Development Consequences of Armed Conflict.” World Development 40 (9): 1713–22.

Hazem Adam Ghobarah , Paul Huth , and Bruce Russett . 2003. “Civil Wars Kill and Maim People—Long after the Shooting Stops.” American Political Science Review 97 (2): 189202.

Michael J. Gilligan , and Ernest J. Sergenti . 2008. “Do UN Interventions Cause Peace? Using Matching to Improve Causal Inference.” Quarterly Journal of Political Science 3: 89122.

Michael Gilligan , and Stephen J. Stedman . 2003. “Where Do the Peacekeepers Go?International Studies Review 5 (4): 3754.

Michael J. Greig , and Paul F. Diehl , 2005. “The Peacekeeping–Peacemaking Dilemma.” International Studies Quarterly 49 (4): 621–45.

Lotta Harbom , Stina Högbladh , and Peter Wallensteen . 2006. “Armed Conflict and Peace Agreements.” Journal of Peace Research 43 (5): 697710.

Lotta Harbom , Erik Melander , and Peter Wallensteen , 2008. “Dyadic Dimensions of Armed Conflict, 1946–2007.” Journal of Peace Research 45 (5): 697710.

Lindsay Heger , and Idean Salehyan . 2007. “Ruthless Rulers: Coalition Size and the Intensity of Civil Conflict.” International Studies Quarterly 51 (2): 385403.

Lise Morjé Howard . 2008. UN Peacekeeping in Civil Wars. Cambridge: Cambridge University Press.

Dennis C. Jett 1999. Why Peacekeeping Fails. New York: Palgrave Press.

Jacob D. Kathman 2013. “United Nations Peacekeeping Personnel Commitments, 1990–2011.” Conflict Management and Peace Science 30 (5): 532–49.

Jacob D. Kathman , and Reed M. Wood . 2011. “Managing Threat, Cost, and Incentive to Kill: The Short- and Long-Term Effects of Intervention in Mass Killings.” Journal of Conflict Resolution 55 (5): 735–60.

Gary King , Michael Tomz , and Jason Wittenberg . 2002. “Making the Most of Statistical Analyses: Improving Interpretation and Presentation.” American Journal of Political Science 44 (2): 347–61.

Bethany Lacina . 2006. “Explaining the Severity of Civil Wars.” Journal of Conflict Resolution 50 (2): 276–89.

Paivi Lujala . 2009. “Deadly Combat over Natural Resources: Gems, Petroleum, Drugs, and the Severity of Armed Civil Conflict.” Journal of Conflict Resolution 53 (1): 5071.

Edward N Luttwak . 1999. “Give War a Chance.” Foreign Affairs 78 (4): 3644.

Michaela Mattes , and Burcu Savun . 2010. “Information, Agreement Design, and the Durability of Civil War Settlements.” American Journal of Political Science 54 (2): 511–24.

Robert Powell . 2004. “Bargaining and Learning While Fighting.” American Journal of Political Science 48 (2): 344–61.

Robert Powell . 2012. “Persistent Fighting and Shifting Power.” American Journal of Political Science 56 (3): 620–37.

Darya Pushkina . 2006. “A Recipe for Success? Ingredients of a Successful Peacekeeping Mission.” International Peacekeeping 13 (2): 133–49.

Patrick M Regan . 2000. “Third-Party Interventions and the Duration of Intrastate Conflicts.” Journal of Conflict Resolution 46 (1): 5573.

Andrea Ruggeri , Theodora-Ismene Gizelis , and Han Dorussen . 2013. “Managing Mistrust: An Analysis of Cooperation with UN Peacekeeping in Africa.” Journal of Conflict Resolution 57 (3): 387409.

Idean Salehyan , and Kristian Skrede Gleditsch . 2006. “Refugees and the Spread of Civil War.” International Organization 60 (2): 335–66.

Jim Terrie . 2009. “The Use of Force in UN Peacekeeping: The Experience of MONUC.” African Security Review 18 (1): 2132. Institute for Security Studies,

Denis M. Tull 2009. “Peacekeeping in the Democratic Republic of Congo: Waging Peace and Fighting War.” International Peacekeeping 16 (2): 215–30.

Suzanne Werner , and Amy Yuen . 2005. “Making and Keeping Peace.” International Organization 59 (2): 261–92.

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American Political Science Review
  • ISSN: 0003-0554
  • EISSN: 1537-5943
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Supplementary Materials

Hultman Supplementary Material
Tables S1-S5

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