The diversity of political spaces, availability of cheap labor, ease of access to powerful figures, and safety net of a foreign passport attract researchers to the developing world. However, environments of extreme state weakness and ongoing conflict permit research behavior that would be frowned on in the global north. We suggest that weak regulatory authority in conflict-affected states offers foreign academics opportunities that are not available when states have greater reach or capacity. Qualitative researchers may find requests to interview victims or perpetrators of wartime violence granted with ease. Experimenters can coerce under-resourced NGOs to pursue interventions at odds with their organizational mandates. We posit that conflict contexts can constitute permissive environments in which researchers can engage in conduct that would be considered deeply problematic at home. Because studying political violence can require firsthand research on aspects of political life not easily observed elsewhere, this article offers a set of guidelines to foster more ethical and responsible research practices.A political scientist conducting interviews on wartime sexual violence finds herself at a health clinic being introduced to patients who are obviously younger than 18. A team of researchers running a behavioral experiment wonders if its local partner organization is endangering participants to randomize treatment in its conflict-adjacent villages. A graduate student working on a shoestring budget in a refugee camp is relieved to find an educated, passionate research assistant (RA) who is eager for work experience and will set up, conduct, translate, and transcribe politically sensitive interviews for only $60 a month.All of these academics are benefiting from the unparalleled access to research subjects, local partners, and labor that often are present in environments of extreme state fragility or conflict. As the volume of field-based research in such contexts increases, it is difficult to ignore the fact that these settings pose challenges not present elsewhere. In countless discussions at conferences, in graduate-student seminars, and in the field, we have heard fellow social scientists echo a common theme regarding research in these contexts: concerns about the ethical implications of their fieldwork and uncertainty about how to mitigate them. 1 Nearly every researcher we spoke with described at least one instance in which they were called on to make an on-the-spot decision involving ethical issues that they had not anticipated, without time to fully consider the consequences. On subsequent reflection, they often wished they had made different decisions.This article explores the ethical pitfalls presented by conflict field research by drawing on our own experiences and those of our colleagues. 2 Following a brief discussion of some common features of these settings, we explain how fragility and conflict can generate ethical dilemmas involving research subjects and partners not present elsewhere. We ...