Advancing the Frontier of Peacekeeping Research

The impact of United Nations (UN) peacekeeping on conflict has received a sustained amount of attention in the empirical literature. The advent of new data on UN peacekeeping and new temporal units of analysis have enabled researchers to expand the frontiers of peacekeeping research and undertake a more nuanced examination of peacekeeping effectiveness. In this special section, a series of articles examine how UN peacekeeping affects different types of violence within conflicts and leads to different types of peaceful outcomes. Factors such as the cultural affinity between peacekeepers and local communities, the size of peacekeeping operations and the specific composition of UN forces are shown to be important variables associated with lower levels of casualties and violence and also a higher likelihood of mediation and timely peaceful settlements in civil wars. In the aggregate, these articles suggest that robust peacekeeping is associated with better outcomes in many stages of conflict.