An authoritarian ruler moves to invade a smaller country and take it for himself. People around the world rally to that country’s defense. European and American leaders grapple with how to stop the invasion and prevent a wider war. But this isn’t Russia and Ukraine in 2022. It’s Italy and Ethiopia in 1935. Rachel Maddow and Isaac-Davy Aronson explore what we can learn from the very different choices made decades ago, when the world faced a similar challenge.