In this extended Frontline conversation, Diane Francis, non-resident senior fellow with the Atlantic Council's Eurasia centre, and Sir William Browder, head of Hermitage Capital which specialises in managing investment funds and assets in Russian markets, join host Philip Ingram to discuss the impact of Vladimir Putin on the world, as he marks 25 years as president of Russia.

The World in 10 is the Times' daily podcast dedicated to global security. Expert analysis of war, diplomatic relations and cyber security from The Times' foreign correspondents and military specialists.

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Frontline special - 25 years of Putin