This paper provides a multifaceted classification of the primary issue for each state involved in territorial disputes between 1816 and 2001. I differentiate principally between cases in which ownership of the territory is disputed and cases over which status quo distributions of territory are acknowledged. I also consider the location of disputed territories-homeland vs other territories-and the types of actions in the dispute. This classification scheme produces categories such as (1) disputed ownership, (2) general border issues, (3) opportunity-based conflict, (4) state-system changes, (5) border violations, and (6) fishing rights and the hot pursuit of rebels. My analyses find that there is significant variation across types of territorial disputes, and serious conflicts are overwhelmingly concentrated in fights over bordering territories with disputed ownership claims. I suggest several ways in which this classification scheme can be used in future research.
Keywords
Issue typology, militarized interstate disputes, territorial conflictThe Correlates of War (CoW) Militarized Interstate Dispute (MID) dataset divides conflicts among four specific issue codes-territory, policy, regime/government, and other.1 This division has proven to be important since a substantial number of studies have demonstrated that territorial issues are more difficult to resolve, more likely to repeat, more prone to fatalities, and more likely to cause wars than other types of issues.2 Nevertheless, this simple distinction between territory and other types of issues still masks a great deal of variation within each category but especially among the broad category of territorial disputes.Many familiar war cases began as territorial disputes-the First Gulf War (MID3957), the Falklands/Malvinas War (MID3630), Nagorno-Karabakh (MID3564), and World War II (MID0258)-but this category also includes some rather bizarre historical events that were coded as militarized incidents. Just a few examples include the 1893 incident in which FrenchCorresponding author: Douglas M. Gibler, University of Alabama, Box 870213, Tuscaloosa, AL 35487, USA. Email: dmgibler@ua.edu troops fired on British troops in West Africa, thinking they were fleeing members of the Sofa tribe (MID2300); the French very quickly apologized for their mistake. Or, in 1842, US Commander Jones misread newspaper reports and thought Mexico was aiding the British, so he sailed to Monterrey and took the city in the name of the United States, only to give it back two days later after he realized his mistake (MID2116). More recently, MID1367 codes cattle rustling by Ugandan troops against Kenya in 1973, and MID4237 describes a similar incident by South African forces directed at Lesotho in 1994. Each of these are territorial disputes in the dataset resting alongside the major territorial wars of the last two centuries.Even a focus on the territorial wars reveals substantial heterogeneity across the cases. The First Gulf War was a broad coalition fighting against Iraq's invasion...