Russia has kept its military at Ukraine’s doorstep for almost a decade. But a recent escalation on the border is creating fears of a full-blown invasion. Today’s show was produced by Victoria Chamberlin, edited by Matt Collette, engineered by Efim Shapiro, fact-checked by Laura Bullard and hosted by Haleema Shah. 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