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The Indicator from Planet Money · June 30, 2026 · 10m

What Iran teaches us about why wars start

Chris Blattman
Show Notes

This episode explores why countries go to war despite its high costs, using conflicts in Iran, Ukraine, and Gaza as case studies. Drawing on Chris Blattman's book Why We Fight, the hosts break down the five incentives that lead rational decision-makers into violent conflict. The discussion highlights how structural factors like information failures, commitment problems, and misaligned interests can override diplomacy, and what this framework reveals about current global tensions.

This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.

Highlights

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Chris Blattman's five factors that lead to war
Chris Blattman's book identifies five distinct incentives that cause rational actors to choose war even when it is costly.
ClaudeChatGPTGemini
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The puzzle of costly conflict
Why do states pursue war despite devastating economic and human consequences?
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Editorial

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Resource: Why We Fight by Chris Blattman
The episode draws on Blattman's book, which synthesizes research on conflict across economics, political science, and psychology.
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References

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Why We Fight: The Roots of War and the Paths to Peace — Chris Blattman — The episode draws on this book to explain the five factors that lead to war.
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