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First published online February 6, 2023

Introducing ACLED: An Armed Conflict Location and Event Dataset

Abstract

This article presents ACLED, an Armed Conflict Location and Events Dataset. ACLED codes the actions of rebels, governments, and militias within unstable states, specifying the exact location and date of battle events, transfers of military control, headquarter establishment, civilian violence, and rioting. In the current version, the dataset covers 50 unstable countries from 1997 through 2010. ACLED’s disaggregation of civil war and transnational violent events allow for research on local level factors and the dynamics of civil and communal conflict. Findings from subnational conflict research challenges conclusions from larger national-level studies. In a brief descriptive analysis, the authors find that, on average, conflict covers 15% of a state’s territory, but almost half of a state can be directly affected by internal wars.

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References

Bocquier Phillippe, Maupeu Hervé (2005) Analysing low intensity conflict in Africa using press reports. European Journal of Population 21 (2–3): 321–345.
Buhaug Halvard (2006) Relative capability and rebel objective in civil war. Journal of Peace Research 43 (6): 691–708.
Buhaug Halvard, Gates Scott (2002) The geography of civil war. Journal of Peace Research 39 (4): 417–433.
Buhaug Halvard, Lujala Päivi (2005) Accounting for scale: Measuring geography in quantitative studies of civil war. Political Geography 24 (4): 399–418.
Buhaug Halvard, Rød Jan Ketil (2006) Local determinants of African civil wars, 1970–2001. Political Geography 25 (3): 315–335.
Doyle Michael, Sambanis Nicholas (2000) International peacebuilding: A theoretical and quantitative analysis. American Political Science Review 94 (4): 779–801.
Earl Jennifer, Martin Andrew, McCarthy John D, Soule Sarah A (2004) The use of newspaper data in the study of collective action. Annual Review of Sociology 30: 65–80.
Elbadawi Ibrahim A, Sambanis Nicholas (2002) How much war will we see? Explaining the prevalence of civil war. Journal of Conflict Resolution 46 (3): 307–334.
Fearon James, Laitin David (2003) Ethnicity, insurgency and civil war. American Political Science Review 97 (1): 75–90.
Gates Scott (2002) Recruitment and allegiance: The microfoundations of rebellion. Journal of Conflict Resolution 46 (1): 111–130.
Gerner Deborah, Schrodt Philip, Yilmaz Ömür, Abu-Jabr Rajaa. (2002). The creation of CAMEO (Conflict and Mediation Event Observations): An event data framework for a post-Cold War world. Paper presented at the 98th Annual Meeting of the American Political Science Association, 29 August–1 September(www.apsanet.org).
Gleditsch Kristian Skrede (2007). Transnational dimensions of civil war. Journal of Peace Research 44 (2): 293–309.
Gleditsch Nils Petter, Wallensteen Peter, Eriksson Mikael, Sollenberg Margareta, Strand Håvard (2002) Armed conflict 1946–2001: A new dataset. Journal of Peace Research 39 (5): 615–637.
Hagelstein Roman (2008) Explaining the violence pattern of the Algerian civil war. HiCN working paper 43 (http://www.hicn.org/papers/wp43.pdf).
Harbom Lotta, Wallensteen Peter (2009) Armed conflict, 1946–2008. Journal of Peace Research 46 (4): 577–587.
Hegre Håvard, Ellingsen Tanja, Gates Scott, Gleditsch Nils Petter (2001) Toward a democratic civil peace? Democracy, political change, and civil war, 1816–1992. American Political Science Review 95 (1): 33–48.
Hegre Håvard, Sambanis Nicholas (2006) Sensitivity analysis of empirical results on civil war onset. Journal of Conflict Resolution 50 (4): 508–535.
Hegre Håvard, Østby Gudrun, Raleigh Clionadh (2009) Economic deprivation and civil war events: A disaggregated study of Liberia. Journal of Conflict Resolution 53 (4): 598–623.
Kalyvas Stathis N (2003) Action and identity in civil wars. Perspectives on Politics 1 (3): 475–494.
Kalyvas Stathis N (2007) The Logic of Violence in Civil War. New York: Cambridge University Press.
Kalyvas Stathis N (2008) Promises and pitfalls of an emerging research program: The microdynamics of civil war. In: Kalyvas Stathis N, Shapiro Ian, Masoud Tarek (eds) Order, Conflict, Violence. Cambridge University Press, 1–14.
Killicoat Philip (2006) Weaponomics: The Economics of Small Arms. Working Paper (257). Oxford: Centre for the Study of African Economies.
Kreutz Joakim. (2006) The nexus of democracy, conflict and the targeting of civilians, 1989–2005. In: Harbom Lotta (ed.) States in Armed Conflict 2005. Uppsala: Department of Peace and Conflict Research, 173–191.
Lyall Jason (2006) Pocket protests: Rhetorical coercion and the micropolitics of collective action in semiauthoritarian regimes. World Politics 58 (3): 378–412.
Lyall Jason (2008) Does indiscriminate violence incite insurgent attacks? Evidence from Chechnya. Journal of Conflict Resolution 53 (3): 331–362.
Lyall Jason, Wilson Isaiah (2009) Rage against the machines: Explaining outcomes in counterinsurgency wars. International Organization 63 (1): 67–106.
Mack Andrew (2002) Civil war: Academic research and the policy community. Journal of Peace Research 39 (5): 515–525.
Moore Will (2000) The repression of dissent: A substitution model of government coercion. Journal of Conflict Resolution 44 (1): 127–147.
Moore Will (2006) A problem with peace science: The dark side of COW. Paper presented at the 48th Annual Convention of the International Studies Association, Chicago, IL, 28 February–3 March.
O’Loughlin John, Witmer Frank (2010) The localized geographies of violence in the North Caucasus of Russia, 1999–2007. Annals of Association of American Geographers 100,in press.
Pevehouse Jon, Goldstein Joshua (1997) International cooperation and regional conflict in the post-Cold War world: Events data for 12 regional conflicts 1987–1999. Manuscript, University of Wisconsin (web.ku.edu/~keds/data.dir/pevehouse.html).
Raleigh Clionadh (2010a) Political marginalization, climate change and conflict in African Sahel states. International Studies Review 12 (1): 69–86.
Raleigh Clionadh (2010b) Seeing the forest for the trees: The effects of physical geography on conflict risk. International Interactions 36 (4),In press.
Raleigh Clionadh, Hegre Håvard (2009) Population size, concentration and civil war. Political Geography 28 (2): 224–238.
Raleigh Clionadh, Urdal Henrik (2007) Climate change, environmental degradation and armed conflict. Political Geography 26 (6): 674–694.
Reno William (1999) Warlord Politics in African States. Boulder, CO: Lynne Rienner.
Restrepo Jorge, Spagat Michael, Vargas Juan F (2006) The severity of the Colombian conflict: Cross-country datasets versus new micro-data. Journal of Peace Research 43 (1): 99–115.
Rustad Siri Aas, Rød Jan Ketil, Larsen Wenche, Gleditsch Nils Petter (2008) Foliage and fighting: Forest resources and the onset, duration, and location of civil war. Political Geography 27 (7): 761–782.
Sarkees Meredith (2000) The Correlates of War data on war: An update to 1997. Conflict Management and Peace Studies 18 (1): 123–144.
Schrodt Philip A, Davis Shannon G, Weddle Judith L (1994) Political science: KEDS – a program for the machine coding of event data. Social Science Computer Review 12 (3): 561–588.
Sundberg Ralph (2008) Collective violence 2002–2007: Global and regional trends. In: Harbom Lotta, Sundberg Ralph (eds) States in Armed Conflict 2007. Uppsala: Department of Peace and Conflict Research, Uppsala University, 165–190.
Walter Barbara (2004) Does conflict beget conflict? Explaining recurrent civil war. Journal of Peace Research 41 (3): 371–388.
Weidmann Nils B, Hegre Håvard, Raleigh Clionadh (2006) Modelling spatial and temporal patterns of civil war. Manuscript, Peace Research Institute Oslo, PRIO (http://www.icr.ethz.ch/publications/weidmann2006modeling.pdf).
Weinstein Jeremy (2007) Inside Rebellion: The Politics of Insurgent Violence. Cambridge: Cambridge University Press.
Wilkinson Steven (2006) Votes and Violence. Cambridge: Cambridge University Press.
Ziemke Jennifer (2008) From Battles to Massacres. Manuscript, University of Wisconsin(http://www.yale.edu/macmillan/ocvprogram/conf_papers/Ziemke.pdf).

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Published In

Article first published online: February 6, 2023
Issue published: September 2010

Keywords

  1. armed conflict
  2. event data
  3. geographical disaggregation
  4. war

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© The Author(s) 2010.
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Authors

Affiliations

Clionadh Raleigh
Department of Geography, Trinity College Dublin, CSCW, Peace Research Institute Oslo (PRIO)
rew Linke
Department of Geography, University of Colorado
Håvard Hegre
Department of Political Science, University of Oslo, CSCW, Peace Research Institute Oslo (PRIO)
Joakim Karlsen
Østfold University College, CSCW, Peace Research Institute Oslo (PRIO)

Notes

CLIONADHRALEIGH, b. 1978, PhD in geography (University of Colorado, 2007), Lecturer in geography, Trinity College Dublin; Research associate, Centre for the Study of Civil War, PRIO. Recent articles in Journal of Conflict Resolution and Political Geography.
ANDREW LINKE, b. 1983, PhD candidate in geography (University of Colorado, Boulder); Research associate, Institute of Behavioral Science, Boulder.
HÅVARD HEGRE, b. 1964, Dr Philos. in Political Science (University of Oslo, 2004); Professor, Department of Political Science, University of Oslo; Research professor, Centre for the Study of Civil War, PRIO. Current research interests: the relationship between democratization, socio-economic development, and militarized conflict; trade and conflict.
JOAKIM KARLSEN, b. 1972, Cand.scient. in informatics (University of Oslo, 2005), Lecturer in information technology, Østfold University College; Research associate, Centre for the Study of Civil War, PRIO.

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