Barbara F. Walter, professor at UCSD, discusses polity scores and why they're important, ethnic entrepreneurs and the creation of factions, and the idea of "outbidding" extremist groups. Watch this episode on YouTube: https://youtu.be/-8GwUNvvKp8 How Civil Wars Start: https://penguinrandomhouse.com/books/624156/how-civil-wars-start-by-barbara-f-walter Follow Barbara F. Walter: https://twitter.com/bfwalter | https://www.barbarafwalter.com Follow Andrew Yang: https://twitter.com/andrewyang | https://forwardparty.com Learn more about your ad choices. Visit podcastchoices.com/adchoices