On Feb. 5, 2003, Secretary of State Colin Powell went to the United Nations to make the Bush administration’s closing argument for war with Iraq. Powell didn’t know it at the time, but one major piece of intelligence he cited came from a shady source—a man code-named Curveball. How did Curveball’s bad information make it into Powell’s speech? And why did no one listen when a woman from the CIA tried to warn everyone?Want more Slow Burn? Subscribe to Slate Plus to immediately access all episodes of Slow Burn (and your other favorite Slate podcasts) completely ad-free. Plus, you’ll unlock subscriber-exclusive bonus episodes that bring you behind-the-scenes on the making of the show. Subscribe now on Apple Podcasts by clicking “Try Free” at the top of our show page. Or, visit slate.com/slowburnplus to get access wherever you listen.Season 5 of Slow Burn is produced by Noreen Malone, Jayson De Leon, and Sophie Summergrad. Mixing by Merritt Jacob.Learn more about your ad choices. Visit megaphone.fm/adchoices