She had much to do at home, and had not yet discovered those weak points in her adversary's harness, which subsequently enabled her to secure by treaty the freedom of the Greek cities upon the mainland.

For the present, therefore, Persia only lost the bulk of her European possessions, and the islands of the Propontis and the Egean.
The circumstances which caused a renewal of Greek agressions upon Asia towards the close of the reign of Xerxes are not very clearly narrated by the authors who speak of them.

It appears, however, that after twelve years of petty operations, during which Eion was recovered, and Doriscus frequently attacked, but without effect, the Athenians resolved, in B.C.
466, upon a great expedition to the eastward.

Collecting a fleet of 300 vessels, which was placed under the command of Cimon, the son of Miltiades, they sailed to the coast of Caria and Lycia, where they drove the Persian garrisons out of the Greek towns, and augmenting their navy by fresh contingents at every step, proceeded along the shores of Pamphylia as far as the mouth of the river Eurymedon, where they found a Phoenician fleet of 340 vessels, and a Persian army, stationed to protect the territory.

Engaging first the fleet they defeated it, and drove it ashore, after which they disembarked and gained a victory over the Persian army.