April 4, 2001: A war criminal who thought he was untouchable just spent his first week in a prison cell. It was a watershed moment for international justice.

For over a decade, Slobodan Milošević orchestrated some of the Balkans' most devastating conflicts from his presidential palace. Then, on April 1st, 2001—no joke—he was arrested. By April 4th, he was locked up facing 66 counts: crimes against humanity, war crimes, and genocide stemming from the 1995 Srebrenica massacre, where over 8,000 Muslim men and boys were killed.

He wasn't pulling the trigger himself. He was the "boss of the bosses"—providing weapons, money, and the political green light to make it happen.

The trial that followed was legendary. Milošević refused legal representation and represented himself, turning the courtroom into a political soapb ...