The partitioners of Macedon had a peace treaty in place, but that was mere expediency. Pyrrhus found that his former allies, Ptolemy and the Aetolians, drifted away. The Aetolians were effectively bought off by Lysimachus’s generosity, and Ptolemy was reluctant to antagonize Lysimachus, in case he ever needed his help against Seleucus in Syria. Lysimachus entered into an alliance with Athens, which completed Pyrrhus’s exposure on the Greek mainland, and launched a propaganda campaign within Macedon, crudely depicting the Epirote as a foreign interloper.

In one of those volte-faces that characterize the entire period, Pyrrhus accordingly allied himself with Gonatas, as if to try to unite the Greek mainland against Lysimachus. Pyrrhus received some of Gonatas’s mercenaries, but in 284, when it came to a confrontation, many of his men deserted to Lysimachus, who took over western Macedon and Thessaly. This not only restricted Pyrrhus to Epirus but drove a wedge between him and Gonatas. It was effectively the end of Pyrrhus’s attempts to expand within the Greek mainland. Before long he turned his attentions west instead—and achieved considerable success for a while against the up-and-coming Romans. Called in to help the Greeks of southern Italy against galloping Roman imperialism, Pyrrhus actually managed to defeat the Romans in three successive battles, but still lost the war. The Romans always had more men on whom they could call, while Pyrrhus had been bled dry. That is why we use the term “Pyrrhic” for a victory that amounts to defeat.

A DIVIDED COURT

So Macedon had a new king, the fifth in ten years. Worse was to follow. In 287, Lysimacheia was badly damaged by an earthquake. It was soon rebuilt, but there were those who were inclined to read it as ominous that Lysimachus’s new capital should fall. ³Alarmed by his awesome power and evident ambitions, mighty enemies were lining up against him. All that was needed was a catalyst.

In 300, Ptolemy I had given his then teenaged daughter Arsinoe to the sexagenarian Lysimachus; in 293 or so, he had given Lysandra (previously married to Alexander V) to Lysimachus’s son and heir Agathocles. Lysandra was a daughter of Ptolemy’s first wife Eurydice, Arsinoe of his second, and preferred, wife Berenice. Ironically, Berenice, Eurydice’s niece, had been in her retinue, and that is how she had come to Ptolemy’s attention.

Long before 285, when Ptolemy named Ptolemy II as his successor, Berenice’s faction at court had completely defeated that of Eurydice. It was a typical amphimetric dispute, the consequence of the Successors’ propensity for polygamy: sons born of the same father but different mothers became rivals for the throne. Eurydice’s son Ptolemy Ceraunus, who as the eldest son felt robbed of the Egyptian throne, was also currently resident at Lysimachus’s court. He was living proof that the eldest son does not necessarily succeed to the throne.

Agathocles may have been disappointed that, while Ptolemy had abdicated in favor of his son and Seleucus had named Antiochus joint king, his own aged father had not seen fit to honor him in the same way. Even Antigonus had done as much for Demetrius. And Lysimachus, for his part, may have been concerned at Agathocles’ royal pretensions, since he had named a city after himself and wore a diadem on his coins. The fact that he had done these things without his father’s permission shows that he already had a semi-independent existence within Asia Minor, with his own treasury, mint, and presumably troops. His success in driving Demetrius out of Asia Minor had won him the allegiance of the Greek cities and of large numbers of prominent men, who formed, as it were, his court. But whatever the pretext—the occupation of the Egyptian throne by Arsinoe’s brother may also have had something to do with it—Lysimachus now chose to favor the sons Arsinoe had borne him over Agathocles, his only son by Nicaea.

Agathocles rallied his supporters and launched a coup. Our sources are so scant for this period that we do not even know whether it came to battle. But, whether as a result of conflict or intrigue, Agathocles fell into his father’s hands and was imprisoned. Before long, Lysimachus had him killed, possibly using Ceraunus as his hit man. ⁴This terrible act did Lysimachus’s cause no good, and he was faced with further unrest, which was brutally crushed. Those who survived the purge fled. Many found their way to Seleucus’s court, including Lysandra; she hated her half sister Arsinoe as much as her mother hated Arsinoe’s mother. Their appeals for help, sowing the seeds of renewed war, fell on fertile ground.

It was certainly a time for ambitions to be fulfilled. A man called Philetaerus, no friend of Arsinoe, was among those who found his way to Seleucus’s court. Originally an Antigonid officer responsible for Pergamum, he had gone over to Lysimachus not long before Ipsus, and after the battle Lysimachus had reappointed him to the governorship of the city. One of the most important things about Pergamum was its relative impregnability; both Antigonus and Lysimachus kept one of their main treasuries there. At the time in question, the treasury held nine thousand talents (somewhat over five billion dollars). Philetaerus offered to draw on this to hire troops for Seleucus, on the understanding that, once Lysimachus was defeated, he could rule over an independent Pergamum. Seleucus agreed—a sound short-term decision, perhaps, but one that his successors would rue, since the Attalid kingdom of Pergamum prospered and soon came to challenge the Seleucids for much of Asia Minor. Its wealth and splendor may be gauged by the extant remains, and especially by the astonishing Altar of Zeus in the Pergamum Museum of Berlin, dating from the first quarter of the second century. ⁵The kingdom survived until it was bequeathed to the people of Rome in 133 BCE.

LAST MAN STANDING

The chaos within Lysimachus’s realm attracted Seleucus. He had spent the years since Ipsus stabilizing and securing his empire and he was now ready to extend it. Any of the Successors would have done the same if they had the resources of Seleucus and were handed such an opportunity—even if, like him, they were closer to eighty than seventy. As far as they were concerned, that was the whole point of having resources: to use them to gain more land and more resources. And Seleucus’s propagandists had paved the way for grand imperialism; he had been born in the same year as Alexander, they said, and he had once rescued Alexander’s diadem after an accident and briefly worn it. As well as spreading stories, he also had politicians promoting his interests in the Greek cities of Asia Minor.

Seleucus mustered his army, elephants and all (he had established a breeding farm at Apamea in Seleucis), ⁶and in July 282 set out for Asia Minor. Ptolemy II, nominally Lysimachus’s ally, did nothing, perhaps in the hope that Seleucus would at the same time rid him of his troublesome half brother. Seleucus crossed the Taurus well before winter set in and spent some time in winter camp on the Asia Minor side of the Taurus, within Lysimachus’s kingdom. This was a bold strategy, but seems to have met with no opposition. The area must have been dominated by men loyal to Agathocles.

At the end of January 281, Seleucus took to the field, and at the same time sent his fleet on ahead to the west coast to lend help to his supporters in the Greek cities. He had softened the cities up by means of generous benefactions, and he used the old Antigonid gambit that they would find him a more congenial king than Lysimachus. A few of the cities did indeed erupt into factional strife, though more of them waited for the outcome of the inevitable decisive battle before committing themselves.