Apart, however, from this prospect of Persian intervention, which doubtless was not without effect, Athens herself was becoming more and more disposed towards peace. That common fear and hatred of the Lacedæmonians, which had brought her into alliance with Thebes in 378 B.C., was now no longer predominant. She was actually at the head of a considerable maritime confederacy; and this she could hardly hope to increase by continuing the war, since the Lacedæmonian naval power had already been humbled. Moreover, the Athenians had become more and more alienated from Thebes. The ancient antipathy between these two neighbours had for a time been overlaid by common fear of Sparta. But as soon as Thebes had re-established her authority in Bœotia, the jealousies of Athens again began to arise. During the last three or four years, Platæa, like the other towns of Bœotia, had been again brought into the confederacy under Thebes. Re-established by Sparta after the Peace of Antalcidas as a so-called autonomous town, it had been garrisoned by her as a post against Thebes, and was no longer able to maintain a real autonomy after the Spartans had been excluded from Bœotia in 376 B.C. While other Bœotian cities were glad to find themselves emancipated from their philo-Laconian oligarchies and rejoined to the federation under Thebes, Platæa--as well as Thespiæ--submitted to the union only by constraint; awaiting any favourable opportunity for breaking off, either by means of Sparta or of Athens. Aware probably of the growing coldness between the Athenians and Thebans, the Platæans were secretly trying to persuade Athens to accept and occupy their town, annexing Platæa to Attica; a project hazardous both to Thebes and Athens, since it would place them at open war with each other, while neither was yet at peace with Sparta. [Sidenote: [373-371 B.C.]] This intrigue, coming to the knowledge of the Thebans, determined them to strike a decisive blow. The bœotarch Neocles conducted a Theban armed force immediately from the assembly, by a circuitous route through Hysiæ to Platæa; which town he found deserted by most of its male adults and unable to make resistance. The Platæans--dispersed in the fields, finding their walls, their wives, and their families, all in possession of the victor--were under the necessity of accepting the terms proposed to them. They were allowed to depart in safety and to carry away all their movable property; but their town was destroyed and its territory again annexed to Thebes. The unhappy fugitives were constrained for the second time to seek refuge at Athens, where they were again kindly received, and restored to the same qualified right of citizenship as they had enjoyed prior to the Peace of Antalcidas.