<p>How did the world heavyweight champion end up running a city of 3 million people in wartime?</p><p>Vitali Klitschko joins Nick from the Ukrainian capital in the midst of a Russian campaign to descimate the city's energy infrastructure.</p><p>He talks about what peace could look like, the lessons he learned from living under Soviet rule as a child, and why he decided to abandon a lucrative life in the US to enter Ukrainian politics. </p><p>Senior producer: Daniel Kraemer Producer: Flora Murray Sound: Ged Sudlow Editor: Giles Edwards</p>