The US hopes the threat of sanctions will dissuade Russia from invading Ukraine. Historian Nicholas Mulder explains the surprising history of economic penalties as a weapon of war. This episode was produced by Amina Al-Sadi, edited by Matt Collette and Sean Rameswaram, engineered by Efim Shapiro, fact-checked by Laura Bullard and hosted by Noel King. Transcript at vox.com/todayexplained Support Today, Explained by making a financial contribution to Vox! bit.ly/givepodcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices