Peace of Antalcidas
As Seuthes II's position improved, he rebelled against Amadocus I: Seuthes despised and attacked his overlord by 391 BC, and the Athenian general Thrasybulus had to reconcile Amadocus I and Seuthes II and to renew their alliance with Athens in 390/389 BC. Seuthes may have quarreled with Amadocus II or his successor Hebryzelmis again; he was rescued from unspecified foes by the Athenian commander Iphicrates. Seuthes II is last mentioned in 387 BC, among the Athenian allies represented at the conclusion of the Peace of Antalcidas/King's Peace.