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.

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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.

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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.

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How deeply was the British Crown involved in the transatlantic slave trade? New research by historian Brooke Newman argues that, from the reign of Queen Elizabeth I, until well into the 19th century, the Crown and its navy helped expand, finance and protect the trade in enslaved African people.

In this episode, Newman joins historian and broadcaster Helen Carr to examine how the monarchy’s links to slavery complicate Britain’s national story about abolition and its colonial past. Drawing on her new book, The Crown’s Silence, she explores the evidence, considers how the subject of reparations has become caught up in the culture wars, and reflects on what a formal apology from King Charles III could mean. 

Brooke Newman is an Associate Professor of history at Virginia Commonwealth University and a fellow of the Royal Historical Society. The Crown’s Silence: The Hidden History of Slavery and the British Monarchy is out now. 

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This is an episode of The Specialist, your weekly dose of wonder. In The Specialist, explore the significance and journey of an extraordinary work through the eyes of those that know it best.

On today’s episode, the extraordinary saga of the 1933 Double Eagle, America’s last gold coin; stolen, smuggled, and seized. Selby Kiffer is Sotheby's Senior International Specialist of Books and Manuscripts. Over the last half century, he has overseen the sale of many of the most celebrated private libraries offered at auction. A lecturer and expert, with a unique knowledge of Americana, he has also handled significant letters by Abraham Lincoln, Thomas Jefferson, John Adams, and Benjamin Franklin. Selby is joined by David Tripp, former Director of Sotheby’s Coin, Tapestry and Musical Instruments departments and widely recognised as the leading expert on the Double Eagle.

⁠Further details about the episode subject⁠

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Populism has been winning big in recent years. It is the wave that has buoyed Donald Trump’s second term in office, Marine Le Pen’s popularity in France, and Reform UK’s recent leaps and bounds in British polling. Across the West, authoritarian populists now govern one-quarter of the world's democracies.

But what explains the surge of populism across the democratic world - and can it be reversed?

In this episode, economist and commentator Will Hutton speaks with Labour MP Liam Byrne about his new book Why Populists Are Winning: And How to Beat Them. Drawing on original polling, international reporting and interviews with leading thinkers, Byrne narrows down the meaning of populism, interrogates the funding, media ecosystems and language deployed by populist leaders, and the psyches of those who are persuaded to vote for them.

Byrne explains how populist leaders mobilise what he calls five distinct ‘tribes’ of voters, and which of these can be appealed to. He sets out his argument for rebuilding what he calls the ‘radical centre’ of Western politics, and why confronting populism requires more than simply condemning it.

Liam Byrne is a Labour MP, a member of His Majesty's Privy Council and the Chair of the House of Commons Business and Trade Select Committee. He served in Gordon Brown's Cabinet, in No. 10 Downing Street and HM Treasury, and chaired the Global Parliamentary Network on the World Bank and IMF 2019-2025. He is the author of more than twenty publications on economics, foreign policy and public service reform including The Inequality of Wealth. His latest is Why Populists Are Winning: and How to Beat Them, which is available now online and in bookstores.

Will Hutton is the former Editor-in-Chief of the Observer. He is a commentator, columnist, and author of books including The State We’re In, How Good We Can Be, and This Time No Mistakes: How to Remake Britain.

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Dr Gwen Adshead is one of Britain’s leading forensic psychiatrists. She is the author of The Sunday Times bestseller, The Devil You Know, which inspired her series of BBC Reith Lectures in 2024. 

In February 2026, she came to the Kiln Theatre for a compelling conversation about trauma, resilience and the transformative power of psychiatry. Drawing on case stories and the themes of her new book, Unspeakable, she asked questions that touch us all: What does a traumatic event do to someone’s identity? How do we talk about loss? What happens when trauma goes unspoken? And how can we overcome deeply traumatic experiences? 

Drawing on three decades of experience, she will tell the stories of her patients struggling in the wake of life-altering events. Through these conversations, she will show how post-traumatic growth is as possible as post-traumatic stress, how psychiatry has a profound role in helping people to find new ways of thinking, and make the case that language is a vital part of recovery.

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Dr Gwen Adshead is one of Britain’s leading forensic psychiatrists. She is the author of The Sunday Times bestseller, The Devil You Know, which inspired her series of BBC Reith Lectures in 2024. 

In February 2026, she came to the Kiln Theatre for a compelling conversation about trauma, resilience and the transformative power of psychiatry. Drawing on case stories and the themes of her new book, Unspeakable, she asked questions that touch us all: What does a traumatic event do to someone’s identity? How do we talk about loss? What happens when trauma goes unspoken? And how can we overcome deeply traumatic experiences? 

Drawing on three decades of experience, she will tell the stories of her patients struggling in the wake of life-altering events. Through these conversations, she will show how post-traumatic growth is as possible as post-traumatic stress, how psychiatry has a profound role in helping people to find new ways of thinking, and make the case that language is a vital part of recovery.

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This is the first instalment of a two-part episode. If you'd like to become a Member and get access to all our full ad free 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:

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... 

Or Subscribe on Apple for £4.99:

- Full-length and ad-free Intelligence Squared podcasts

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Already a subscriber? Thank you for supporting our mission to foster honest debate and compelling conversations! Visit intelligencesquared.com to explore all your benefits including ad-free podcasts, exclusive bonus content and early access.

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