Who Killed Athenian Democracy, Episode 3

After defeating the Persian empire, Athens and its democratic system were on top of the world. But prize fighters always attract challengers. And just down the road from Athens, another Greek city state thought it should be calling the shots. Envy turned to jealousy. And jealousy turned to murder.

Sources: 

• The Peloponnesian War, by Donald Kagan
• Lords of the Sea, by John R. Hale