Events proved that, at this period at any rate, the decadence of Assyria was not due to any exhaustion of the race or impoverishment of the country, but was owing Mainly to the incapacity of its kings and the lack of energy displayed by their generals. The Assyrian troops had lost none of their former valour, but their leaders had shown less foresight and skill. As soon as Tiglath-pileser assumed leadership, the armies regained their former prestige and supremacy.
The empire still included the original patrimony of Assur and its ancient colonies on the Upper Tigris, but the buffer provinces, containing the tribes on the borders of Syria, Namri, Nairi, Melitene, had thrown off the yoke, as had the Arameans, while Menuas of Armenia and his son Argistis had by their invasions laid waste the Median territory. Sharduris III., son of Argistis, succeeded to the throne of Armenia about 760, and at once overran the district of Babilu, carrying by storm three royal castles, 23 cities, and 60 villages. He also captured the castles of the mountaineers of Melitene. Crossing Mount Taurus about 756, he forced the Hittites to swear allegiance.
It was in the middle of this eighth century B.C., in the days of Tiglath-pileser III. of Assyria, and Sharduris III. of Armenia, that Isræl, under Jehoash, and his son Jeroboam II.; inspired by the exhortations of Elisha the prophet, was rehabilitated for a season, winning victories over the Syrians and taking vengeance on Damascus, and then attacking the Moabites. The sudden collapse of Damascus led to the decline of Syria, but though Jeroboam II. seemed to be firmly seated as king in Samaria, the downfall of Isræl and Judah alike, as well as of Tyre, Edom, Gaza, Moab, and Ammon, was foretold by the prophet Amos, while from the midst of Ephraim the priest-seer, Hosea, was never weary of reproaching the tribes with their ingratitude and of predicting their coming desolation.
Ere long, Tiglath-pileser began his campaigns against them by attacking the Arameans, dwelling on the banks of the Tigris. He overthrew them at the first encounter. Nabunazir, then king in Babylon, bowed before him and swore fidelity to him, and he visited Sippar, Nipur, Babylon, Borsippa, Kuta, Kishu, Dilbat and Uruk, Babylonian "cities without a peer," and offered sacrifices to all their gods--to Bel Zirbanit, Nebo, Tashmit, and Nir-gal. This settlement took place in 745 B.C.
His next exploit was the rapid conquest of the mountainous and populous regions on the shores of the Caspian. And now he ventured to try conclusions with Armenia and to attack the famous kingdom of Urartu in the difficult fastnesses round Lakes Van and Urumiah. Crossing the Euphrates in the spring of 743 B.C., he captured Arpad, and soon afterwards marched forth to meet the great army of Sharduris. The rout of the latter was complete, and he fled, after losing 73,000 men. The victor was covered with glory; yet the triumph cost him dear, for the forces left him were not sufficient to finish the campaign, nor to extort allegiance from the Syrian princes who had allied themselves with Sharduris.
After spending the winter in Nineveh, reorganising his troops, the Assyrian inaugurated a campaign which ended in the subjugation of Northern Syria and its incorporation in the empire. Only one difficulty foiled Tiglath-pileser. He failed to capture the impregnable fortress of Dhuspas, in which Sharduris had taken refuge. This capital of Urartu held out against a long siege, and at length the Assyrian army withdrew. Sharduris remained king as before, but he was utterly spent, and his power had received a blow from which it never recovered. Since then, Armenia has more than once challenged fortune, but always with the same result; it fared no better under Tigranes in the Roman epoch than under Sharduris in the time of the Assyrians.
As for Egypt at this period, it was ruled over by what is known as the Bubastite dynasty, so called from the city of Bubastis, in the Delta, where the Pharaohs of the time, Osorkon I., his son Takeloti I., and his grandson, Osorkon II., for an interval of fifty years chiefly resided, abstaining from politics, so that the country enjoyed an interval of profound peace. But the old cause brought about the fall of this dynasty also. Military feudalism again developed and Egypt split up into many petty states. The sceptre at length passed to another dynasty, this time of Tanite origin. Petubastis was the first of the line, but the power was really in the hands of the priests, one of whom, Auiti, actually declared himself king, together with Pharaoh.
Sensational events followed. The weakness of Egypt tempted an uprising of the Ethiopians, who overran a great part of the country. And it was at this period that Tiglath-pileser crushed the kingdom of Isræl, King Pekah being compelled to flee from Samaria into the mountains, while the inhabitants of Naphtali and Gilead were carried into captivity.
Nabonazir, King of Babylon, who had never swerved from the fidelity he had sworn to his mighty ally after the events of 745, died in 734 B.C., and was succeeded by his son Nabunadinziri, who at the end of two years was assassinated in a popular rising, and one of his sons, Nabushumukin, who was concerned in the rising, usurped the crown. He wore it for two months and twelve days, and then abdicated in favour of a certain Ukinzir, an Aramean chief.
But Tiglath-pileser gave the new dynasty no time to settle itself firmly on the throne. The year after his return from Syria he marched against it. After two years of fighting Ukinzir was overcome and captured. Tiglath-pileser entered Babylon as conqueror, and caused himself to be proclaimed King of Sumir and Akkad within its walls. Many centuries had passed since the two empires had been united under one ruler. His Babylonian subjects seem to have taken a liking for him; but he did not long survive his triumph, dying after having reigned eighteen years over Assyria, and less than two years over Babylon and Chaldæa.