But the peace lasted only a few years. Fighting resumed, and Sparta defeated the combined armies of Athens and her allies at Mantinea. In 415 a radical new leader of Athens, [[Alcibiades]], convinced the Athenian Assembly to invade [[Syracuse]], a Peloponnesian ally in Sicily. It was a total disaster. The end was near for Athens, which was weakened further by a plague that killed much of her population. Sparta then had a fleet to challenge Athens on the seas, and benefited from an extraordinary military leader named [[Lysander]]. He seized the Hellespont to cut off Athens' grain imports and threaten the city-state with starvation. Athens sent all it had let to confront him, but failed at Aegospotami in 405 B.C. | But the peace lasted only a few years. Fighting resumed, and Sparta defeated the combined armies of Athens and her allies at Mantinea. In 415 a radical new leader of Athens, [[Alcibiades]], convinced the Athenian Assembly to invade [[Syracuse]], a Peloponnesian ally in Sicily. It was a total disaster. The end was near for Athens, which was weakened further by a plague that killed much of her population. Sparta then had a fleet to challenge Athens on the seas, and benefited from an extraordinary military leader named [[Lysander]]. He seized the Hellespont to cut off Athens' grain imports and threaten the city-state with starvation. Athens sent all it had let to confront him, but failed at Aegospotami in 405 B.C. |