The State Department and President Biden have both declared that Russian President Vladimir Putin has committed war crimes in Ukraine. What are the rules of war? What constitutes a war crime? And what consequences might Putin face for the brutality of his invasion? Heather and Joanne look back at the centuries-long quest by world leaders and humanitarians to regulate violence in wartime, from General George Washington’s rules of civility during the Revolutionary War, to Abraham Lincoln’s use of the Lieber Code during the Civil War, to the development of the Geneva Conventions. Join CAFE Insider to listen to “Backstage,” where Heather and Joanne chat each week about the anecdotes and ideas that formed the episode. Head to: cafe.com/history Attend the Stay Tuned with Preet in-person live event with special guests Ben Stiller and Garry Kasparov on March 31: cafe.com/events For more historical analysis of current events, sign up for the free weekly CAFE Brief newsletter, featuring Time Machine, a weekly article that dives into an historical event inspired by each episode of Now & Then: cafe.com/brief For references & supplemental materials, head to: cafe.com/now-and-then/war-crimes-war-codes Learn more about your ad choices. Visit podcastchoices.com/adchoices