 Complete the following phrase:  When Arcadius died on 1 May 408, his seven-year-old son Theodosius II succeeded him under the tutelage of the praetorian prefect Anthemius. A Hunnic leader, Uldin invaded the Balkans and demanded a tribute, but Anthemius forced him to abandon the campaign by bribing his lieutets. Taking advantage of the Romans distrust of Stilichos foreign mercenaries, his former protégé Olympius staged a coup and achieved Stilichos execution. Searching for a new homeland, the Vandals and their allies left Gaul and invaded the Iberian Peninsula in 409. Constantine III appointed his son Constans to take command of the defence, but the general Gerotnius disobeyed and proclaimed one Maximus emperor in Tarraco. Alaric invaded Italy in the autumn of 408. He demanded tribute and his appointment to a senior military office, but his negotiations with Honorius failed. On his demand, the Senatus proclaimed a Roman aristocrat Priscus Attalus emperor, but Honorius resisted at Ravenna with the support of Eastern Roman reinforcements. Alaric attacked Rome and the Visigoths 