History of the Peloponnesian War

And having summoned the allies, they told them that their own opinion was that the Athenians were in the wrong; but that they wished to summon all the allies also, and to put it to the vote; that after general consultation they might declare war, if they thought fit.

They then, after having settled this, returned home; as did the ambassadors of the Athenians afterwards, when they had despatched the business they had gone on.

This decision of the assembly, that the treaty had been broken, was made in the fourteenth year of the continuance of the thirty years' truce, which had been concluded after the war with Euboea.

Now the Lacedaemonians voted that the treaty had been broken, and that war should be declared, not so much because they were convinced by the arguments of the allies, as because they were afraid that the Athenians might attain to greater power, seeing that most parts of Greece were already under their hands.

For it was in the following manner that the Athenians were brought to those circumstances under which they increased their power.

When the Medes had retreated from Europe after being conquered both by sea and land by the Greeks, and those of them had been destroyed who had fled with their ships to Mycale; Leotychides, king of the Lacedaemonians, who was the leader of the Greeks at Mycale, returned home with the allies that were from the Peloponnese; while the Athenians, and the allies from Ionia and the Hellespont, who had now revolted from the king, stayed behind, and laid siege to Sestos, of which the Medes were in possession. Having spent the winter before it, they took it, after the barbarians had evacuated it; and then sailed away from the Hellespont, each to his own city.