International organizations (IOs) are perceived as increasingly important, yet also severely challenged actors in world politics. How authoritative are IOs, how do they exercise authority, and how has their authority evolved over time? The International Authority Database (IAD) offers a novel...

Over the past two decades, the United Nations Security Council has responded more strongly to some humanitarian crises than to others. This variation in Security Council action raises the important question of what factors motivate United Nations intervention. This article offers a...