resettled some of them in Anatolia (ca. 649 or 667). In 659 he campaigned far to the east, taking advantage of a rebellion against the Caliphate in Media. The same year he concluded peace with the Arabs. Now Constans could turn to church matters once again. Pope Martin I had condemned both Monothelitism and Constans' attempt to halt debates over it in the Lateran Council of 649. The Emperor ordered the Exarch of Ravenna to arrest the Pope. Exarch Olympius excused himself from this task, but his successor, Theodore I Calliopas, carried it out in 653. Pope Martin was brought to Constantinople and condemned as a criminal, ultimately being exiled to Cherson, where he died in 655. Constans grew increasingly fearful that his younger brother, Theodosius, could oust him from the throne; he therefore obliged Theodosius to take holy orders and later had him killed in 660. Constans' sons Constantine, Heraclius, and Tiberius had been associated on the throne since the 650s. However, having attracted the hatred of the citizens of Constantinople, Constans decided to leave the capital and to move to Syracuse in Sicily. On his way, he stopped in Greece and fought the Slavs at Thessalonica with success. Then, in the winter of 662–663, he made his camp at Athens. From there, in 663, he continued to Italy. He launched an assault against the Lombard Duchy of Benevento, which then encompassed most of Southern Italy. Taking advantage of the fact that Lombard king Grimoald I of Benevento was engaged against Frankish forces from Neustria, Constans disembarked at Taranto and besieged Lucera and Benevento. However, the latter resisted and Constans withdrew to Naples. During the journey from Benevento to Naples, Constans II was defeated by Mitolas, Count of Capua, near Pugna. Constans ordered Saburrus, the commander of his army, to attack the Lombards again, but he was defeated by the Beneventani at Forino, between Avellino and Salerno. In 663 Constans visited Rome for twelve days—the first emperor since the fall of the Western Roman Empire in 476 and, along with John VIII Palaiologos, one of only two Eastern Roman emperors since the division of the Roman empire in 395 to set foot in Rome—and was received with great honor by Pope Vitalian (657–672). Although on friendly terms with Vitalian, he stripped buildings (including the Pantheon) of their ornaments and bronze to be carried back to Constantinople, and in 666