The Big View
The Big View

Why trade flows are so enduring and hard to stop

September 1, 2026

AI Summary

5 min read

In 14th-century England, King Edward III controlled roughly 90% of the world's supply of fine wool. When he needed Flanders to choose sides in the Hundred Years' War, he simply stopped exporting it. It worked — one of the most successful trade wars in history. That example, drawn from Ed Conway's new book Trade World, is the first of many he uses to argue that the weaponization of trade is anything but new. Conway, economics and data editor for Sky News, joins host Peter Ferras on The Big View to explain why trade flows are remarkably durable, why barriers rarely stop them, and what history reveals about the limits of economic models that treat trade as a clean, static exchange.

The gap between models and messy reality

Conway begins by challenging the economic models that still dominate thinking about trade. The theory of comparative advantage, famously articulated by David Ricardo in 1817, remains the go-to framework for economists defending free trade. But Conway notes that Ricardo deliberately ignored the messy reality around him — the Corn Laws, famines, and volcanic winters — to build an abstract theory. That abstraction, while elegant, obscures something essential: trade is not a frictionless flow of goods between interchangeable nations. It is a tangled web of supply chains, middlemen, and historical accidents.

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What you'll learn

  • 1 (00:03) **Introduction: The Enduring Patterns of Trade Warfare** - Host Peter Ferras frames the episode's core tension: the modern belief that today's trade conflicts are unique versus the historical reality that weaponizing trade is centuries old.
  • 2 (01:37) **Guest Introduction: Ed Conway and His Historical Lens** - Ed Conway, economics editor for Sky News and author of *Trade World*, joins to discuss why looking at the micro-level of specific products reveals more than macro-economic models.
  • 3 (05:12) **The Myth of Comparative Advantage: Ricardo's Abstract Theory** - Conway explains that David Ricardo developed his theory of comparative advantage as a pure abstraction, ignoring the messy trade wars and famines of his own era.
  • 4 (09:16) **Edward III's Wool Embargo: The First Successful Trade War** - Conway details how 14th-century England, as the "Saudi Arabia of wool," used a 90% market share to coerce Flanders into an alliance during the Hundred Years' War.
  • 5 (13:17) **Sanctions and the "Middlemen": Trade Finds a Way** - Conway uses the example of Range Rovers reaching Russia via Georgia to illustrate how sanctions are circumvented by an invisible layer of middlemen whose entire business is moving goods around barriers.
  • 6 (20:37) **The Chinese Overcapacity Question: Is It Futile to Resist?** - Host Ferras asks whether the historical resilience of trade flows means it is futile for the West to try and stop the flood of cheap Chinese goods.
  • 7 (24:46) **The First World War Lesson: Industrial Capacity as Insurance** - Conway draws a direct line from the UK's laissez-faire trade policy before 1914 to its desperate scramble for TNT and binoculars once war with Germany began.

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Show Notes

Donald Trump’s tariffs and Chinese rare earths have scrambled global commerce. Yet as Ed Conway describes in ‘Trade World’, rulers have wielded chokepoints for centuries, with mixed results. In this episode of The Big View, he tells Peter Thal Larsen that advantages rarely last.


Ed Conway: “Trade World: The Ties that Bound Our Past and Could Unravel Our Future”


Leonard Read: “I, Pencil”


The Big View: How the Strait of Hormuz changes economic warfare


The Big View: The power and peril of American economic warfare


The Big View: Donald Trump’s biggest trade shock is yet to come


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