FPThe mob that had gathered at a soccer stadium descended on the U.S. Embassy in Belgrade, determined to avenge Washington’s recognition of Kosovo — a Serbian province until five days earlier — as an independent state. On that day in February 2008, the Serbian riot police stationed in front of the embassy at the request of U.S. Ambassador Cameron Munter conveniently vanished just before the hundreds-strong horde arrived. “The police marched away, got on buses, and drove away, so when the hoodlums came there was no one there,” Munter recalled.

A part of the embassy was soon ablaze. “One of the protesters who was drunk managed to get in and burned himself to death,” Munter said. Several others climbed the fence. The U.S. Marines guarding the compound had every right to shoot, but they managed to drive the intruders away with warnings and instructions instead…