We investigate situations in which players make costly contributions as group members in a group conflict, and at the … asymmetry and complementarity in members' efforts, and analyze how each group's internal conflict influences its chance of … winning in the external conflict. We find that a more symmetric group may expend more effort in external conflict when the …

open civil conflict against the government. Our model implies that terrorism emerges if constraints on the ruling executive … group are intermediate and rents are sizeable, whereas conflict looms under poor executive constraints. Analyzing annual … when considering the incidence and onset of terrorism and conflict. The corresponding magnitudes are economically sizeable …

We consider a differential game of a conflict between two factions who both have a desire to exact revenge. We show …-Palestinian conflict. We also discuss the implications of revenge-dependent preferences for welfare economics and their strategic value as …

We develop a theory of interstate conflict in which the degree of genealogical relatedness between populations has a … positive effect on their conflict propensities because more closely related populations, on average, tend to interact more and … that affect conflict, including measures of trade and democracy …