The spillover of war in time and space: Exploring some open issues

Abstract

In spite of a voluminous empirical literature, the diffusion of civil war in time and space is still not fully understood and several issues remain open for debate. This article sheds new light on some of these issues. First, we assess the robustness of results to changes in the definition of neighbourhood (spatial dimension) and in the lag structure (temporal dimension). Second, we investigate the factors that determine the strength of civil war diffusion, focusing in particular on (i) the type of war (e.g. its intensity and scope), (ii) the quality of domestic polity, and (iii) interaction opportunities (e.g. ethnic ties and refugee flows). Third, we look at how the occurrence of war in a neighbouring country affects the duration (and not just the onset) of domestic civil war.