Intelligence Squared

On August 20, 1940, in a quiet study in Mexico, one of the 20th century’s most consequential political exiles was assassinated with an ice pick. The killing of Leon Trotsky marked the culmination of a relentless campaign orchestrated by Joseph Stalin, stretching across continents and years of pursuit.

But how did the plot unfold — and who was the man who carried it out?

In this episode, historian and author Tim Bouverie speaks with writer Josh Ireland about his new book The Death of Trotsky. Drawing on archival research and narrative history, Ireland reconstructs the parallel lives of Trotsky, Stalin and Ramón Mercader, the Soviet agent who infiltrated Trotsky’s inner circle under a false identity.

The conversation explores the machinery of Stalinist power, the psychological and political forces that drove the pursuit of Trotsky into exile, and of how political violence at the highest levels of power continues to echo today, from targeted killings in Putin’s Russia to attempted assassinations in Western democracies.

Josh Ireland is a historian and writer specialising in modern European history. He is the author of The Death of Trotsky: The True Story of the Plot to Kill Stalin’s Greatest Enemy, which is available now in bookstores.

Tim Bouverie is a historian and author of Appeasing Hitler: Chamberlain, Churchill and the Road to War and Allis at War. He is known for his work on 20th-century European history and international relations.

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Dr Radha Modgil is joined by endurance athlete, investor and author Ken Rideout for an inspiring Intelligence Squared conversation on what it really takes to transform your life. Drawing on the ideas in his book Everything You Want Is On The Other Side of Hard, Rideout argues that growth, confidence and fulfilment are only found by deliberately choosing discomfort over ease.

Together, they explore why so many of us avoid difficult challenges, how modern life conditions us to seek convenience, and what is lost when we do. Rideout shares lessons from his own journey—from addiction and adversity to elite-level endurance sport—and explains how discipline, accountability and doing “hard things” can reshape not just your mindset, but your entire future.

Blending personal storytelling with practical insight, this episode offers a clear, uncompromising perspective on resilience, mental toughness and the pursuit of a more meaningful life.

... 

Or Subscribe on Apple for £4.99:

- Full-length and ad-free Intelligence Squared podcasts

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Before sex evolved on our planet, two billion years ago, all reproduction happened asexually. So why and how did sexual reproduction evolve?

Dr Lixing Sun is Distinguished Research Professor in behavior and evolution at Central Washington University. In a new book, On the Origin of Sex, he explores the fascinating, varied and complex ways reproduction happens across the natural world: from whiptail lizards, capable of immaculate conception, to clownfish and bearded dragons who regularly switch gender roles.

In this episode he sat down with Dr Güneş Taylor to explore the biological advantages of sexual reproduction, the differences between sex and gender and the variety of ways in which our planet is populated. 

On The Origin of Sex: The Weird and Wonderful Science of Reproduction by Dr Lixing Sun,  is available now online and in stores.

If you'd like to become a Member and get access to all our full conversations, plus all of our Members-only content, just visit intelligencesquared.com/membership to find out more.

For £4.99 per month you'll also receive:

- Full-length and ad-free Intelligence Squared episodes, wherever you get your podcasts

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Or Subscribe on Apple for £4.99:

- Full-length and ad-free Intelligence Squared podcasts

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According to Great British Bake Off judge and national treasure Prue Leith the secret to a happy life lies in embracing everyday with joy while accepting our inevitable end.

Prue has had an exhilarating career. She has been a Michelin-starred restaurateur, author, broadcaster, and beloved Bake Off judge. Yet her passion for life has also been shaped by the loss of her brother and first husband. These experiences inspired her to become a leading campaigner for assisted dying in the UK.

In February 2026 Prue joined Intelligence Squared live at the Royal Geographical Society to reflect on her remarkable life and share insights from her new memoir Being Old … and Learning to Love It! Expect reflections on love, ageing, joy, and grief — from strutting the catwalk and finding love again in her seventies, to facing life’s hardest goodbyes with humour and grace.
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According to Great British Bake Off judge and national treasure Prue Leith the secret to a happy life lies in embracing everyday with joy while accepting our inevitable end.

Prue has had an exhilarating career. She has been a Michelin-starred restaurateur, author, broadcaster, and beloved Bake Off judge. Yet her passion for life has also been shaped by the loss of her brother and first husband. These experiences inspired her to become a leading campaigner for assisted dying in the UK.

In February 2026 Prue joined Intelligence Squared live at the Royal Geographical Society to reflect on her remarkable life and share insights from her new memoir Being Old … and Learning to Love It! Expect reflections on love, ageing, joy, and grief — from strutting the catwalk and finding love again in her seventies, to facing life’s hardest goodbyes with humour and grace.
Learn more about your ad choices. Visit podcastchoices.com/adchoices