De Facto States in International Politics (1945–2011): A New Data Set

Sovereign states remain the primary units of analysis in conflict research. Yet, the empirical record suggests that the international system includes a wider range of actors whose behavior is relevant for conflict outcomes. This article introduces De Facto States in International Politics (1945–2011), a new data set dedicated to understanding the behavior of de facto states—separatist statelike entities such as Abkhazia. I begin by explaining why de facto states deserve attention. Further, I provide a definition of the de facto state that separates it from cognate phenomena. Thereafter, I offer an overview of the data set and illustrate its utility by demonstrating how it contributes to the literatures on war and state making, civil war, and rebel governance.