YouTube, which is owned by Google, is one of the rare Western social media platforms that is not banned by Russia. Neal Mohan, YouTube’s Chief Product Officer, discusses the fine line between disinformation and censorship – and explains why banning fake news channels isn’t always the best way forward. Lucy and Vitaly are joined by the BBC's disinformation reporter Marianna Spring. Together, they speak to Sergei Buntman, from the independent Russian radio station, Ekho Moskvy. The station was taken off air on 1st March. It now operates on YouTube. And they hear from journalist Konstantin Ryzhenko, who decided to stay in Kherson under Russian occupation, but is now a wanted man by the Russians and has to remain in hiding. The series producer is Estelle Doyle. The producers are Arsenii Sokolov and Ivana Davidovic. Planning producer is Louise Hidalgo. The technical producer is Emma Crowe. The editor is Jonathan Aspinwall. Email Ukrainecast@bbc.co.uk with your questions and comments. You can also send us a message or voice note via WhatsApp, Signal or Telegram to +44 330 1239480.