This chapter applies localized peace enforcement theory to a subnational analysis of patterns of dispute escalation in Mali. In order to investigate whether the previous chapters’ experimental findings generalize to real-world operations, the chapter presents the results of two analyses of UN peacekeeping efforts to prevent the onset of communal violence in the central Malian region of Mopti. The first study leverages a geographic regression discontinuity design to compare dispute escalation on either side of the Burkina Faso–Mali border. The border splits similar areas into those “treated” with UN peacekeeping patrols (on the Mali side) and “control” areas without peacekeeping (on the Burkina Faso side). The findings indicate that peacekeeping reduces the likelihood of communal violence. The second study delves deeper into the data with an analysis of UN peacekeepers from different countries deployed to the same regions of Mali and uncovers further evidence in line with the predictions of the theory. Rather than comparing UN peacekeeping in countries with against those without a peacekeeping operation, the study compares UN peacekeepers from different contributing countries – Togo and Senegal – deployed to the same area.