In its biggest victory yet, Ukraine retook its vital port city, Kherson. The Guardian’s Luke Harding calls Russia’s retreat a turning point in the war — but a long, cold winter awaits. This episode was produced by Victoria Chamberlin and Haleema Shah, edited by Matt Collette, fact-checked by Laura Bullard, engineered by Efim Shapiro, 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