The Public Orations of Demosthenes, vol 1 | Page 3

Corcyra also took the opportunity to break with her. Moreover, her position in the Thermaic region was threatened first by Olynthus, at the head of the Chalcidic League, which included over thirty towns; and secondly by Philip, the newly-established King of Macedonia, who seemed likely to displace both Olynthus and Athens from their positions of commanding influence.[1]
Nevertheless, Athens, though unable to face a strong combination, was probably the most powerful single state in Greece. In her equipment and capacity for naval warfare she had no rival, and certainly no other state could vie with her in commercial activity and prosperity. The power of Sparta in the Peloponnese had declined greatly. The establishment of Megalopolis as the centre of a confederacy of Arcadian tribes, and of Messene as an independent city commanding a region once entirely subject to Sparta, had seriously weakened her position; while at the same time her ambition to recover her supremacy kept alive a feeling of unrest throughout the Peloponnese. Of the other states of South Greece, Argos was hostile to Sparta, Elis to the Arcadians; Corinth and other less important cities were not definitely attached to any alliance, but were not powerful enough to carry out any serious movement alone. In North Greece, Thebes, though she lacked great leaders, was still a great power, whose authority throughout Boeotia had been strengthened by the complete or partial annihilation of Platacae, Thespiae, Orchomenus,[2] and Coroneia. In Athens the ill feeling against Thebes was strong, owing to the occupation by the Thebans of Oropus,[2] a frontier town which Athens claimed, and their treatment of the towns just mentioned, towards which the Athenians were kindly disposed. The Phocians, who had until recently been unwilling allies of Thebes, were now hostile and not insignificant neighbours, and about this time entered into relations with both Sparta and Athens. The subject of contention was the possession or control of the Temple of Apollo at Delphi, which the Phocians had recently taken by force from the Delphians, who were supported by Thebes; and in the 'Sacred War' to which this act (which was considered to be sacrilege) gave rise in 355 B.C., the Thebans and Locrians fought against the Phocians in the name of the Amphictyonic Council, a body (composed of representatives of tribes and states of very unequal importance[3]) to which the control of the temple traditionally belonged. Thessaly appears to have been at this time more or less under Theban influence, but was immediately dominated by the tyrants of Pherae, though the several cities seem each to have possessed a nominally independent government. The Greek peoples were disunited in fact and unfitted for union by temperament. The twofold desire, felt by almost all the more advanced Greek peoples, for independence on the one hand, and for 'hegemony' or leadership among other peoples, on the other, rendered any effective combination impossible, and made the relations of states to one another uncertain and inconstant. While each people paid respect to the spirit of autonomy, when their own autonomy was in question, they were ready to violate it without scruple when they saw their way to securing a predominant position among their neighbours; and although the ideal of Panhellenic unity had been put before Greece by Gorgias and Isocrates, its realization did not go further than the formation of leagues of an unstable character, each subject, as a rule, to the more or less tyrannical domination of some one member.
Probably the power which was most generally feared in the Greek world was that of the King of Persia. Several times in recent years (and particularly in 387 and 367) he had been requested to make and enforce a general settlement of Hellenic affairs. The settlement of 387 (called the King's Peace, or the Peace of Antalcidas, after the Spartan officer who negotiated it) had ordained the independence of the Greek cities, small and great, with the exception of those in Asia Minor, which were to form part of the Persian Empire, and of Lemnos, Imbros, and Scyros, which were to belong to Athens as before. The attempt to give effect to the arrangement negotiated in 367 failed, and the terms of the Peace of Antalcidas, though it was still appealed to, when convenient, as a charter of liberty, also came to be disregarded. But there was always a sense of the possibility or the danger of provoking the great king to exert his strength, or at least to use his wealth, to the detriment of some or all of the Greek states; though at the moment of which we are speaking (about 355) the Persian Empire itself was suffering from recent disorders and revolutions, and the king had little leisure for interfering in the affairs of Greece.
It was to the department of foreign and inter-Hellenic