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Setting the scene
By 404 BCE, Athens had been fighting Sparta in the Peloponnesian War for 27 years. The war began in 431 BCE as a struggle for dominance between Athens' maritime empire and Sparta's Peloponnesian League. Athens suffered a devastating plague in 430 BCE and the disastrous Sicilian Expedition (415-413 BCE) that destroyed its fleet. In 405 BCE, Spartan admiral Lysander destroyed the last Athenian fleet at Aegospotami, cutting off Athens' grain supply from the Black Sea.
What happened
In 404 BCE, Lysander blockaded Piraeus, Athens' port. Starving, Athens surrendered in April 404 BCE. The Spartans imposed harsh terms—Athens' Long Walls and fortifications were demolished, its fleet reduced to 12 ships, its empire dissolved, and a pro-Spartan oligarchy, the Thirty Tyrants, installed. The surrender ended the Athenian Golden Age and its empire. The Thirty Tyrants ruled brutally for eight months, executing 1,500 Athenians, before democracy was restored in 403 BCE.
Why it still matters
Athens' surrender in 404 BCE marked the end of the classical Greek world dominated by city-states and the beginning of Spartan hegemony, which proved short-lived and unpopular. The Peloponnesian War, chronicled by Thucydides, demonstrated the dangers of imperial overreach, the fragility of democracy under stress, and how prolonged war corrupts societies. The war exhausted Greece, leaving it vulnerable to Macedonian conquest in 338 BCE. Athens never regained its empire, though it remained a cultural center. The war's lessons about power, alliances, and civil conflict remain relevant, making Thucydides' history a classic of political thought.
Background
The war reshaped power across the Greek world. Even centuries later, this episode remains a reference point for how empires rise, fracture, and transform.