The Kremlin cracks down on opposition leader Alexei Navalny’s supporters all over Russia. And, how Pfizer is making the most of its available vaccine doses. Read more:President Vladimir Putin has continued efforts to quash massive protests in Russia, spurred by the arrest and sentencing of recently returned opposition leader Alexei Navalny. Robyn Dixon reports from Moscow.Health business reporter Christopher Rowland explains how the Pfizer drug company is squeezing extra doses from overfilled vials of its coronavirus vaccine. If you value the journalism you hear in this podcast, please subscribe to The Washington Post! We have a deal just for podcast listeners — two years of unlimited access to everything The Post publishes for just $59 total. That comes out to around $2.46 per month. To sign up, go to washingtonpost.com/subscribe.