Context The Correlates of War (COW) Project has utilized a classification of wars that is based upon the status of territorial entities, in particular focusing on those that are classified as members of the inter-state system (referred to as “states”). This dataset encompasses wars that predominantly take place within the recognized territory of a state, or intra-state wars. Acknowledgements *Sarkees, Meredith Reid and Frank Wayman (2010). Resort to War: 1816 - 2007. Washington DC: CQ Press.* Created as part of the ['Correlates of War (COW)][1] project. [1]: http://www.correlatesofwar.org/data-sets/COW-war