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The Peace of Nicias was a treaty signed in 421 BCE between Athens and Sparta, marking a temporary halt in the Peloponnesian War. Negotiated by the Athenian general Nicias, it aimed to restore the pre-war status quo, with most territorial gains to be returned.123

However, the peace proved fragile. Sparta's allies, like Corinth and Boeotia, rejected it, and Athenian general Alcibiades sought to undermine it. Warfare soon resumed, leading to the disastrous Athenian expedition to Sicily, commanded by Nicias, which ended in a catastrophic defeat and the execution of Nicias himself. The Peloponnesian War ultimately concluded with Athens' surrender to Sparta in 404 BCE.312

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