In 609 the enemy once more overran Asia Minor, capturing among other places the great city of Caesarea in Cappadocia. Again they met with little or no opposition; the emperor’s attention was entirely taken up with real or imaginary plots in the capital. It seemed that he would allow the empire to be torn from him piecemeal, without striking a blow. But relief was at last about to come to the suffering people of New Rome. In Africa there ruled as exarch Heraclius, the veteran officer whose victories had closed the old Persian wars of the time of Maurice. He was capable and much beloved both by the provincials and by his army; under his able rule Africa, alone among the provinces of the empire, enjoyed peace and prosperity. In 609 Heraclius received emissaries from Priscus, the commander of the imperial guard, one of the innumerable persons who had fallen under the suspicion of Phocas. The messengers bade Heraclius strike boldly at Constantinople, for Phocas was universally detested, and no one would raise an arm in his defence. At the same moment the exarch learnt that his tyrannical master had already conceived doubts of his loyalty, and had thrown his wife and daughter into prison. [Sidenote: Rebellion of Heraclius.] Seeing that he must strike hard or be crushed, Heraclius determined to rebel. He spent the winter of 609-10 in fitting out a fleet, and launched it against Constantinople before Phocas had learnt of his revolt. The command was given to his eldest son, who also bore the name of Heraclius, for the exarch himself was old and ailing. At the same time, to make a diversion, he sent a body of cavalry under his nephew, Nicetas, to invade Egypt by land; they were to follow the line of the long coast-road through Tripoli and Cyrene. When the fleet of the younger Heraclius reached the Dardanelles it met with no resistance; on the news of its arrival, Priscus brought the imperial guard to join the rebels, and the emperor found himself deserted by all his soldiery. He strove, like his predecessor Maurice, to arm the factions of the Blues and Greens; but no one would strike a blow in behalf of such a worthless tyrant. Heraclius sailed unopposed to the Bosphorus, and as he arrived off the palace he met a boat containing the wretched Phocas, whom a private enemy had seized and cast into chains. The prisoner was brought on deck and cast at the feet of his conqueror. ‘Is it thus,’ cried Heraclius, ‘that you have governed the empire?’ ‘Will you,’ the fallen tyrant replied, ‘govern it any better?’ Heraclius spurned him with his foot, and promptly consigned him to the headsman.