The defeat and death of Eumenes put Antigonus in possession of a vast monarchy, extending from the Hellespont as far as India. According to the early invented principle of the balance of power, the others now demanded that he should give up a part of his conquests; they even thought it necessary, for the sake of justice and for the balance of power, that the countries of upper Asia should form a separate state.
Seleucus, the child of fortune, was destined to obtain that empire; a man who was the pet of fortune, but in no way distinguished as a hero or statesman. In the same year (316 B.C.) in which Cassander had conquered Macedonia, and Antigonus, after the conquest of Eumenes, returned from Upper Asia, Antigonus intended to order Seleucus to be arrested at Babylon. But he escaped, and the Chaldeans now foretold Antigonus, that the fate of his family was involved in the affair. It was easy to foretell the beginning, but not the end, for the Seleucidæ did not overthrow Antigonus. Seleucus now went to Ptolemy whom he urged on to wage war against Antigonus.
Thus arose, in 316 B.C., the second or third great internal war among the Macedonian princes—we say the second or third, because the recommencement of the war in 318 B.C. may either be regarded as a continuation of the first or as a second war. In this war, Antigonus fell out with Cassander, and Ptolemy allied himself with Cassander and Lysimachus against Antigonus. Lysimachus, however, was cunning enough to keep aloof as much as he could, and Cassander, too, at first took much less part in it than Ptolemy. In the beginning it was, properly speaking, only Antigonus and Ptolemy that were arrayed against each other.
The war was at first carried on especially in Syria and Cyprus. Ptolemy had taken possession of Cœle-Syria and southern Phœnicia. Antigonus now directed his arms against him, and at first generally with success, so that he made himself master of Syria and a great part of Cyprus; until, in the fourth year of the war, Demetrius Poliorcetes lost the battle of Gaza against Ptolemy, of which we shall speak hereafter.
In the meantime, however, the generals of Antigonus were carrying on a war in Greece against Cassander, from 315 B.C. till the end of 312 B.C. It is worthy of remark that both Antigonus and Ptolemy considered the Greeks of sufficient importance, to endeavour to gain their favour by proclaiming the struggle a war of independence for the Greeks; neither of them, however, had any serious intention of this kind. In the very first year of the war, Antigonus sent Aristodemus of Miletus with a fleet and large sums of money to Greece, probably with no other intention than to make a diversion against Cassander and prevent him from crossing over into Asia.
[312-311 B.C.]
This brought unspeakable misery upon Greece. Each city was too weak, and also but little inclined to defend itself; each threw itself into the arms of the party that happened to be at its gates. Alexander, the son of Polysperchon, had remained in Peloponnesus, establishing himself mainly at Corinth and Sicyon; he now joined Antigonus, from whom he received money and troops. He and Aristodemus also enlisted soldiers in Greece, and the war now broke out, especially in Peloponnesus. Cassander, forcing his way into the peninsula, conquered Cenchreæ, the port of Corinth.
But all on a sudden, Alexander deserted Antigonus, and faithlessly concluded a peace with Cassander in his own name and that of his father. By this means, Aristodemus was driven out of Peloponnesus, and now went to Ætolia, whence he carried on the war against the opposite countries of Peloponnesus, Achaia, and Elis. The watchword always was, “Liberty and Autonomy for Greece;” but the towns were, notwithstanding, treated in a most terrible manner. During the first campaign, the principal scene of operations was Arcadia and Argolis, and in the second, Elis and Achaia. Almost the whole of Achaia was laid waste during this campaign, and Patræ and Ægium were taken. Alexander was then murdered, and Cratesipolis, his widow, keeping possession of Corinth and Sicyon, ruled there almost as an absolute queen.
A Scene in Syria
But Cassander transferred the war into Ætolia; these occurrences rendered the conflict more and more important, and the Acarnanians, therefore, beginning to be apprehensive, threw themselves into the arms of Cassander and the Macedonians. Being now supported by Cassander, they endeavoured to rid themselves of their connection with the Ætolians. The year following saw the commencement of the war of Cassander against Ætolia.