Communal disputes over local issues such as land use, cattle herding, and access to scarce resources are a leading cause of conflict across the world. In the coming decades, climate change, forced migration, and violent extremism will exacerbate such disputes in places that are ill equipped to handle them. Local Peace, International Builders examines the conditions under which international interventions mitigate communal violence. The book argues that civilian perceptions of impartiality, driven primarily by the legacies of colonialism, shape interveners' ability to manage local disputes. Drawing on georeferenced data on the deployment of over 100,000 UN peacekeepers to fragile settings in the 21st century as well as a multimethod study of intervention in Mali – where widespread violence is managed by the international community – this book highlights a critical pathway through which interventions can maintain order in the international system. This title is also available as Open Access on Cambridge Core.