Peter Heather

British historian at King's College London who wrote The Fall of the Roman Empire, Empires and Barbarians, and The Restoration of Rome — arguing that external pressure from the Huns caused the Goths to migrate into Roman territory, triggering the chain of events that destroyed the Western Roman Empire.

Restored the external barbarian cause of Rome's fall against revisionist internal decline theories — Heather's detailed account of the Hunnic migration's knock-on effect (Goths into Rome, Roman defeat at Adrianople, eventual sacking of Rome) provides a compelling narrative of structural causation for Rome's fall.