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Armed Conflicts, 1946—2009


  • Lotta Harbom

    (Uppsala Conflict Data Program (UCDP),

  • Peter Wallensteen

    (Uppsala Conflict Data Program (UCDP))


In 2009, UCDP recorded 36 active armed conflicts, down by one from 2008. Having remained fairly stable over the past few years, the number of armed conflicts is now substantially lower than during the peak years of the early 1990s. But compared to the early years of this decade, the figure has increased by 24%. Six of the conflicts reached the level of war (more than 1,000 battle-related deaths) in 2009, up by one from 2008. No interstate conflict was recorded, but seven intrastate conflicts were internationalized, in the sense that one or both of the conflict parties received troops support from an external state. The most intense war in terms of fatalities was that in Sri Lanka. Eight of the armed conflicts listed for 2008 were not active in 2009, but during the year, one entirely new conflict erupted in Myanmar (Kokang), two were restarted by previously recorded actors in Angola (Cabinda) and in Rwanda and four previously recorded conflicts were restarted by new actors in Central African Republic, India (Bodoland), Nigeria and Yemen. Only one peace agreement was concluded during the year, which is decidedly lower than the annual average recorded for the past 20 years.

Suggested Citation

  • Lotta Harbom & Peter Wallensteen, 2010. "Armed Conflicts, 1946—2009," Journal of Peace Research, Peace Research Institute Oslo, vol. 47(4), pages 501-509, July.
  • Handle: RePEc:sae:joupea:v:47:y:2010:i:4:p:501-509

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    Cited by:

    1. Cervellati, Matteo & Fortunato, Piergiuseppe & Sunde, Uwe, 2011. "Democratization and Civil Liberties: The Role of Violence During the Transition," Economics Working Paper Series 1108, University of St. Gallen, School of Economics and Political Science.
    2. Christian Lessmann, 2016. "Regional Inequality and Internal Conflict," German Economic Review, Verein für Socialpolitik, vol. 17(2), pages 157-191, May.
    3. Matthew R DiGiuseppe & Colin M Barry & Richard W Frank, 2012. "Good for the money," Journal of Peace Research, Peace Research Institute Oslo, vol. 49(3), pages 391-405, May.
    4. Matteo Cervellati & Sunde, Uwe, 2011. "Democratization, Violent Social Conflicts, and Growth," Economics Working Paper Series 1114, University of St. Gallen, School of Economics and Political Science.
    5. Edward Miguel & Shanker Satyanath, 2011. "Re-examining Economic Shocks and Civil Conflict," American Economic Journal: Applied Economics, American Economic Association, vol. 3(4), pages 228-232, October.

    More about this item


    conflict; data; dyad; peace agreement;


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