Thyestes killed Atreus. While Thyestes ruled Mycenae, the sons of Atreus, Agamemnon and Menelaus, were exiled to Sparta. There, King Tyndareus accepted them as the royalty that they were. Shortly after, he helped the brothers return to Mycenae to overthrow Thyestes, forcing him to live in Cytheria, where he died. As a token of good will and allegiance, King Tyndareus offered his daughters to Agamemnon and Menelaus as wives, Clytemnestra and Helen respectively. When Agamemnon left Mycenae for the Trojan War, Aegisthus seduced Agamemnon's wife, Clytemnestra, and the couple plotted to kill her husband upon his return. They succeeded, killing Agamemnon
History of Sparta Spartans would guarantee to the king his ancestral lands; to wit, the coast of Asia Minor with the Ionian cities (it was not really Persian ancestral land). An agreement was reached. A Spartan fleet and negotiator was sent to Asia Minor. The negotiator was Alcibiades, now persona non grata in Sparta because of his new mistress, the wife of King Agis, then away commanding the garrison at Deceleia. After befriending Tissaphernes Alcibiades was secretly offered an honorable return to Athens if he would influence the latter on their behalf. He was a double agent, 411-407. The Spartans received little money