In 452 CE, Attila the Hun invaded Italy. Cities in the north were devastated—Aquileia’s fall echoed like a warning across the empire—and panic spread as Attila’s forces moved deeper into the peninsula. Rome feared the worst. The Western Empire was weak, its armies stretched thin, and its politics fractured. This was the moment when diplomacy wasn’t a “soft option.” It was the only option. So a Roman delegation rode out to meet Attila. At its head was Pope Leo I—later remembered as “Leo the Great