Nor was even Amasis called upon actually to redeem the pledges which he had given. In B.C. 546, Crœsus, without summoning any contingents from his allies, precipitated the war with Persia by crossing the river Halys, and invading Cappadocia, which was included in the dominions of Cyrus. Having suffered a severe defeat at Pteria, a Cappadocian city, he returned to his capital and hastily sent messengers to Egypt and elsewhere, begging for immediate assistance. What steps Amasis took upon this, or intended to take, is uncertain; but it must have been before any troops could have been dispatched, that news reached Egypt which rendered it useless to send out an expedition. Crœsus had scarcely reached his capital when he found himself attacked by Cyrus in his turn; his army suffered a second defeat in the plain before Sardis; the city was besieged, stormed, and taken within fourteen days. Crœsus fell, alive, into the hands of his enemy, and was kindly treated; but his kingdom had passed away. It was evidently too late for Amasis to attempt to send him succour. The tripartite alliance had, by the force of circumstances, come to an end, and Amasis was an independent monarch, no longer bound by any engagements. Shortly afterwards, in B.C. 538, the conquering monarchy of Persia absorbed another victim. Nabonadius was attacked, Babylon taken, and the Chaldæan monarchy, which had lasted nearly two thousand years, brought to an end. The contest had been prolonged, and in the course of it some disintegration of the empire had taken place. Phœnicia had asserted her independence; and Cyprus, which was to a large extent Phœnician, had followed the example of the mother-country. Under these circumstances, Amasis thought he saw an opportunity of gaining some cheap laurels, and accordingly made a naval expedition against the unfortunate islanders, who were taken unawares and forced to become his tributaries. It was unwise of the Egyptian monarch to remind Cyrus that he had still an open enemy unchastised, one who had entered into a league against him ten years previously, and was now anxious to prevent him from reaping the full benefit of his conquests. We may be sure that the Persian monarch noted and resented the interference with territories which he had some right to consider his own; whether he took any steps to revenge himself is doubtful. According to some, he required Amasis to send him one of his daughters as a concubine, an insult which the Egyptian king escaped by _finesse_ while he appeared to submit to it.