Vitaly, Frank and Irena are looking into the Wagner Group, Russia’s private army that is allegedly involved in the Ukraine war. The group has been active over the past eight years in Ukraine, Syria and several African countries, and has repeatedly been accused of war crimes. We hear from ex Wagner fighter Marat Gabidullin about his experience and why Russia is relying on a private army. And Vitaly talks to Vladimir Osechkin, a former prisoner and now a human rights activist whose organisation, Gulagu.net, alleges that the Wagner Group and Russian security services are actively recruiting in Russian prisons for the Ukraine war. The BBC’s Tim Whewell discusses his up-coming documentary on people living in the Ukrainian port city of Kherson under Russian occupation. The series producer is Estelle Doyle. The producers are Clare Williamson, Arsenii Sokolov and Ivana Davidovic. Planning producer is Louise Hidalgo. The technical producer is Emma Crowe and 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.