Peacekeeping mitigates killing, but nonlethal violence also influences both positive peace and stability. We evaluate peacekeepers’ effect on one such type of abuse, sexual violence. We posit that peacekeepers raise the cost of abuses and foster institutional and cultural changes that curb violence. We find that missions both reduce the chance of any violence and limit its prevalence; larger deployments and multidimensional missions are more effective. Governments curtail violence more quickly than rebels do in response to military contingents; rebels are especially responsive when missions include large civilian components. These findings contribute to our understanding of peacekeeping in three primary ways: we expand the evaluation of peacekeeping to consider nonlethal violence; we draw attention to mission size, capacity to use force, and civilian-led programming as determinants of effectiveness; and we demonstrate how addressing nonlethal violence requires similar tools as lethal violence but is further enhanced by specific civilian-led initiatives.
When do civil wars last especially long? Commitment problems can stymie conflict resolution but they are not homogeneous across all civil wars. Indeed, combatants’ perceptions of their adversaries significantly affect the severity of commitment problems. Intergroup interactions provide combatants with one crucial type of information about their adversaries and about the risks associated with signing a peace settlement, shaping strategic decisions. The argument is tested against a new data set of all ethnic civil wars between 1945 and 2004. The results demonstrate that intergroup interactions prolong wars when they indicate that a peace deal will be especially fragile or that the costs of it breaking down will be especially high. This is true, regardless of the combatants’ goals or their capabilities. In sum, information shapes perceptions and the severity of commitment problems, in turn affecting the duration of civil wars.
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