Poisoned Russian opposition leader Alexei Navalny returns to a Moscow jail cell
After being poisoned and sent abroad for emergency medical treatment last year, Russian opposition leader Alexei Navalny this week returned to Moscow — and a jail cell. We talk to Vladimir Kara-Murza, a Russian opposition politician who also survived poisoning attempts; and journalist Catherine Belton, author of Putin's People: How the KGB Took Back Russia and Then Took On the West.