History of the Peloponnesian War

So the Lacedaemonians being engaged in a war with the rebels in Ithome, the Thasians in the third year of the siege obtained terms from the Athenians by razing their walls, delivering up their ships, and arranging to pay the monies demanded at once, and tribute in future; giving up their possessions on the continent together with the mine.

The Lacedaemonians meanwhile finding the war against the rebels in Ithome likely to last, invoked the aid of their allies, and especially of the Athenians, who came in some force under the command of Cimon.

The reason for this pressing summons lay in their reputed skill in siege operations; a long siege had taught the Lacedaemonians their own deficiency in this art, else they would have taken the place by assault.

The first open quarrel between the Lacedaemonians and Athenians arose out of this expedition. The Lacedaemonians, when assault failed to take the place, apprehensive of the enterprising and revolutionary character of the Athenians, and further looking upon them as of alien extraction, began to fear that if they remained, they might be tempted by the besieged in Ithome to attempt some political changes. They accordingly dismissed them alone of the allies, without declaring their suspicions, but merely saying that they had now no need of them.