Negotiations with Honorius might have succeeded had it not been for another intervention by Sarus, of the Amal family, and therefore a hereditary enemy of Alaric and his house. He attacked Alaric's men. Why Sarus, who had been in imperial service for years under Stilicho, acted at this moment remains a mystery, but Alaric interpreted this attack as directed by Ravenna and as bad faith from Honorius. No longer would negotiations suffice for Alaric, as his patience had reached its end, which led him to march on Rome for a third and final time.