Blair et al. (2023) examine the effect of UN peacekeeping on democratization in conflict-affected countries. They use fixed effects and instrumental variable estimators and find evidence that "UN missions with democracy promotion mandates are strongly positively correlated with the quality of...

I critically review recent studies that estimate those costs of violence and conflict that can emerge among organized political groupings, from states, religious and ethnic organizations to guerillas and paramilitaries. The review includes studies that estimate direct and indirect costs due to...