May 2000 - Of the 27 major armed conflicts that occurred in 1999, all but two took place within national boundaries. As an impediment to development, internal rebellion especially hurts the world's poorest countries. What motivates civil wars? Greed or grievance? Collier and Hoeffler compare two...

In this paper we examine the claim that natural resources invite civil conflict, and challenge the main stylized facts in this literature. We find that the conventional measure of resource dependence is endogenous with respect to conflict, and that instrumenting for dependence implies that it is...

We use three different measures of fractionalization (with varying potential for members of one fraction to “mendaciously” pass for a member of another) to revisit the correlation between natural resources and the onset of conflict. The combination of ethnic fractionalization and resource...