The Militarized Interstate Confrontation Dataset, 1816-2014

We use this article to introduce the Militarized Interstate Confrontation (MIC) dataset, 1816-2014—a new dataset for international conflict with a host of innovative features. The MIC data corrects thousands of errors in existing interstate conflict data and provides fatality ranges for all conflicts, with meaningful fatality estimates and no missing fatality values. Thus, the MIC data fixes missing data problems that have precluded researchers from analyzing escalation and related issues because of the lack of integrated conflict and war data. We also identify and distribute separate datasets for state-versus-citizen actions that are protest-dependent. These are attacks on shipping, fishing boats, and rebels, which were previously included in the data because the sovereign of those private citizens protested. We discuss our systematic search for new conflict cases and the 108 new conflicts we found, and we provide analyses and summaries that demonstrate the usefulness of our MIC data. Finally, we use our new data to create the first ever dataset of truly dyadic, directed dyad-year data, with highest actions and fatalities that vary appropriately within conflicts by both year and dyad. We believe these datasets will be useful for a host of studies but especially those interested in how conflicts evolve over time.