Does international peacekeeping protect civilians caught up in civil wars? Do the 16,000 United Nations peacekeepers deployed in the Democratic Republic of the Congo actually save lives, and if so how many? Did the 9,000 patrols conducted by the U.N. Mission in South Sudan in the past three months protect civilians there? The answer is a dissatisfying “maybe.”
But peacekeeping can—and must—make a case for its own utility, using data already at its fingertips.