American forces are leaving Afghanistan after 20 years of fighting the country’s longest war. Following a hasty withdrawal of U.S. forces, the Taliban now controls most of the country, including the capital of Kabul. The U.S.-backed government has fled, leaving many civilians desperate to find a way out. How did things get so bad so quickly? Guest: Fred Kaplan, Slate’s War Stories columnist. Kaplan is the author of The Bomb: Presidents, Generals, and the Secret History of Nuclear War.  If you enjoy this show, please consider signing up for Slate Plus. Slate Plus members get benefits like zero ads on any Slate podcast, bonus episodes of shows like Slow Burn and Dear Prudence—and you’ll be supporting the work we do here on What Next. Sign up now at slate.com/whatnextplus to help support our work. Learn more about your ad choices. Visit megaphone.fm/adchoices