The son and successor of Seleucus, who bore the same name as his father with the surname of “the thunderbolt” (Ceraunus), entered on the heritage of the kingdom and the war with Attalus, but after a reign of three years met his death in battle at the hands of Nicanor and the Galatian captain Apaturius. The Syrian army then bestowed the crown upon his younger brother, Antiochus III. He, being occupied with the eastern provinces, delegated the conduct of the war in Asia Minor to his maternal uncle Achæus. They both fought with good fortune and success. While the king led an expedition into Media and Persia, defeated the rebellious satraps Molon and Alexander in the field and constrained them to commit suicide, and compelled the Bactrians, Parthians, and Indians to acknowledge the suzerainty of the Syrian king, Achæus drove his adversary Attalus back over the frontiers of his own principality, pressed hard upon him in his own capital, and, by a policy of mingled conciliation and coercion, prevailed upon the Greek cities of the western coast to submit to annexation. But, rendered presumptuous by success, he next attempted to set up an independent kingdom in Asia Minor, and thus again prevented the complete restoration of the Seleucid dominion. Antiochus, involved in a fresh war with Egypt, from which country he was scheming to wrest the intermediate Syrian territory of the Lebanon, was obliged to let his uncle have a free hand for a while. But he had hardly concluded peace with Ptolemy after the disastrous battle of Raphia in the ancient country of the Philistines, and abandoned his claim to the Syrian coast, before he took the field against the traitorous Achæus. The latter, deserted by most of his troops, took refuge in the fortified city of Sardis, where he was closely besieged by Antiochus, and, having been treacherously betrayed into his hands, was put to a painful death.
Antiochus, whom the flattery of contemporary historians styles “the great,” then conceived the design of restoring the empire of the Seleucids to its pristine expansion. For this purpose he undertook an adventurous campaign of several years’ duration in eastern Iran and India, constrained the revolting princes and states to do homage to him, and extorted a recognition (more apparent than real) of Syrian supremacy.
Just as Antiochus returned to Asia Minor the fourth Ptolemy, the voluptuous Philopator, died, and his son Ptolemy Epiphanes, a minor, succeeded to the kingdom. The consequent disorders, factions, and weakness of Egypt inspired the enterprising king of Syria with the hope that he might after all acquire the coast land of the Lebanon. Reinforced by a treaty of partition with Philip of Macedonia, who himself coveted the Egyptian possessions in Asia Minor, Thrace, and the islands, Antiochus invaded Judea with an army, overthrew the Ætolian leader, Scopas, commander of the Egyptian forces, at Paneas near the sources of the Jordan, and subjugated the coast, including the fortified town of Gaza. The inhabitants of Jerusalem and Judea gladly welcomed the rule of Syria, which was at first mild and conciliatory, though it soon became even more oppressive than that of Egypt. The guardians of the Egyptian king hastened to prevent an attack upon Egypt itself by concluding a treaty of peace in which they renounced all claim to the conquered territory and betrothed their ward to Cleopatra, daughter of Antiochus. Meanwhile Philip had been waging successful war in Asia Minor, the Hellespont, and the islands, though all his conquests were rendered nugatory by the disastrous fight with the Romans at Cynoscephalæ.
[196-170 B.C.]