Arsinoe, therefore, calumniously informed Lysimachus that his life was threatened by his son Agathocles. The latter was at first treated with insult and persecuted by his father, and soon afterwards killed by poison. As this made a great impression, Lysimachus caused several others of his sons to be put to death, and began to rage against all whom Arsinoe pointed out as partisans of Agathocles. These things produced a complete state of anarchy both in the house of Lysimachus and in his kingdom. As everyone felt that his life was in danger, his nobles began to apply for protection to Seleucus, to whom Lysandra, the wife of Agathocles, had fled with one of her husband’s brothers. Seleucus had no objection to being thus called upon to interfere. He marched from Babylon across Mount Taurus down into Western Asia, and, though chiefly by treachery, gained a decisive victory over the aged king in Lower Phrygia. Lysimachus, as at all other times, showed great valour, but fell in the battle. With the exception of Cassandrea, where the widow Arsinoe resided with her children, the whole of the Macedonian state surrendered to Seleucus.
SELEUCUS; ANTIGONUS; THE PTOLEMIES
The whole of Alexander’s empire, with the exception of Egypt, southern Syria, a portion of Phœnicia, and Cyprus, was thus united under the sceptre of Seleucus. As he had not seen his native country since the beginning of Alexander’s expedition, Seleucus now crossed the Hellespont to take possession of his native land, perhaps with the intention of there closing his days in peace. But while sacrificing in the neighbourhood of Lysimachia, he was murdered by Ptolemy Ceraunus, whom he had protected in his misfortunes with the view, according to the policy of the time, of having a dangerous pretender against Ptolemy Philadelphus. The state of dissolution was such that Ptolemy, without any difficulty, was recognised as king by the Macedonian troops of Seleucus, and by all Macedonia. He accordingly took possession of the empire. There was no hereditary family—that was the misfortune. Ptolemy Ceraunus had paved his way to the throne by murder and ingratitude; but he was in himself no insignificant man: he was very brave and resolute. What his morality was will be seen hereafter.
[281-280 B.C.]
The Asiatic provinces of Lysimachus were quite united with the Syrian empire, of which Antiochus remained in undisturbed possession, Seleucus, even in his lifetime, having assigned to him the upper provinces. Antiochus endeavoured to avenge the death of his father; and a war broke out between Ptolemy Ceraunus and this Antiochus, who is surnamed Soter, for all the Macedonian kings bearing the same name are distinguished by surnames. He was called Soter, for having conquered the Gauls in Asia Minor. Ptolemy Ceraunus was also at war with Antigonus.
The war with Antiochus did not last long; for Antiochus was wise enough to confine himself to Asia, and not to extend his power further. He would not come to Europe, because he would have been unable to defend his possessions there. He therefore soon listened to proposals of peace.
No definite peace seems to have been concluded with Antigonus; he was too weak to effect anything against Macedonia, and seems to have been reasonable enough to avoid everything which might have called forth greater efforts against him.
Ptolemy endeavoured to establish his power firmly by treaties; and here our guide passes on to the history of Pyrrhus: Ptolemy tried to form alliances, renounced his claims to Egypt, became reconciled with his brother Ptolemy Philadelphus, and tried to win the friendship of Pyrrhus.
Throughout this period, Antigonus Gonatas was at war with Ptolemy Ceraunus, Antiochus Soter, and Ptolemy Philadelphus, and carried on a petty maritime war with them. But during the same period a general Greek war was carried on against him “with the aid of Egypt.” This war is mentioned only in a chapter of Justin, by means of which we must find our way by a careful interpretation; and for this reason the war has been overlooked by all who have written on the Amphictyons. It had its origin in the Amphictyony. Justin, who mentions its date, 281, however, does not call it an Amphictyonic war. The fact is that the Greeks sought a pretext for uniting their forces, in order to rid themselves of the dominion of Antigonus, and therefore engaged in a war against the Ætolians, who were allied with Antigonus.