More than ever, humanitarian aid workers and diplomats are engaging with vulnerable populations in areas once considered too dangerous to touch. Drawing on decades of on-the-ground experience in conflict environments around the world, Van Arsdale and Smith offer this important and revealing guide to the ethics, theory, and practice of work outside so-called Green Zones of safety. On behalf of governments or NGOs, on missions ranging from complex humanitarian emergencies to post-war reconstruction, social scientists in interdisciplinary teams are operating in settings where the line between civilian and military projects is increasingly blurred. This book is essential reading for anyone who wants to understand the realities of these new humanitarianisms and for the fields of international relations, anthropology, development studies, and peace studies.