In the wake of the greatest crisis to hit Europe since the Second World War, former Moscow correspondent Tim Whewell examines the president, people and processes that led to that momentous decision, and others like it.

Radical advisers, tame oligarchs, intelligence agencies scared to tell Putin the truth and the domestic repercussions of NATO’s political moves - Tim brings together the variety of causes that have led to deep dysfunction and the concentration of power in a single man who risks becoming synonymous with the state itself.

Interviewees include investigative journalists Catherine Belton and Andrei Soldatov, and former NATO Secretary General George Robertson.

Producer: Nathan Gower
Sound: Nigel Appleton
Production Coordinators: Siobhan Reed and Sophie Hill
Editor: Hugh Levinson