According to Plutarch he was made an object of attack by the political enemies of Pericles, and died in prison at Athens.
In his attitude towards the members of the Delian League Pericles likewise maintained a purely Athenian point of view.
In this crisis Pericles induced the Spartan leaders to retreat, apparently by means of.
Before 460 Pericles' influence was as yet too small; 460-451 were years of war.
The chief cleruchies of Pericles are: Thracian Chersonese (453-452), Lemnos and Imbros, Andros, Naxos and Eretria (before 447); ' Brea in Thrace (446); Oreus (445); Amisus and Astacus in the Black Sea (after 440); Aegina (431).