Yet, the relationship between population and war is not one of them. Political scientists are open to many theoretical and methodological approaches to the analysis of war. The tectonic plates of population change are shifting underneath the feet of political scientists, and the resultant analytical and policy earthquakes will remake the features of international politics in this century. Just as an earthquake compels one's attention whether one is a geologist or not, population change will be the earthquake in the study of international politics that compels the attention of the discipline.
For political scientists, studying the relationship between population change and war is a bit like geological change-not immediately important and so it is infrequently noticed.
