Attacks on humanitarian aid operations are both a symptom and a weapon of modern warfare, and as armed groups increasingly target aid workers for violence, relief operations are curtailed in places where civilians are most in need. This book provides an in-depth analysis of the challenges to humanitarian action in warzones, the risk management and negotiation strategies that hold the most promise for aid organizations, and an ethical framework from which to tackle the problem. By combining rigorous research findings with structural historical analysis and first-person accounts of armed attacks on aid workers, the author proposes a reframed ethos of humanitarian professionalism, decoupled from organizational or political interests, and centered on optimizing outcomes for the people it serves.