According to the head of the British military, the Russian government spends 40% of its budget on its war machine. But is it true? With the help of Professor Bettina Renz from Nottingham University and Dr Richard Connolly from The Royal United Services Institute, Olga Smirnova investigates the figure. Presenter: Tom CollsProducer: Olga SmirnovaProduction Co-ordinator Katie MorrisonSeries Producer: Tom CollsSound Mix: Graham PuddifootEditor: Richard Vadon

Image: Russian Military Perform Victory Day Parade Night Rehearsal in Moscow Credit: (Photo by Oleg Nikishin/Getty Images)