When The Global Economy Becomes a 'Weapon'

The world's biggest geopolitical battles aren't fought with military force alone. Edward Fishman explains how everything from shipping lanes to the US dollar has become a source of strategic power.
Wall Street Play Podcast
Yuki Iwamura / AP

About The Episode

Five months after the conflict between the United States, Israel, and Iran began, Council on Foreign Relations’ Edward Fishman joins Leslie Vinjamuri to explain how strategic "chokepoints" — from the Strait of Hormuz to the US dollar — have become powerful tools of geopolitical competition. They discuss what makes a true chokepoint, why tariffs aren't always effective, and how the United States can compete in a more fragmented global economy.

Key Takeaways

  • The post-Cold War era of globalization was built for a period of unipolar American power, and the absence of great power competition. Fishman argues that as geopolitical rivalry returned, states have turned economic dependencies, once prized for efficiency and prosperity, into a source of leverage through sanctions, tariffs, and export controls.
  • Not every economic dependency is a “chokepoint.” Fishman says a true chokepoint combines a dominant market position, few substitutes, and the ability to hurt an adversary more than yourself—a test the dollar passes, but broad US tariffs generally do not.
  • The dollar remains America’s most powerful tool of economic warfare because it is used in roughly 90 percent of foreign-exchange transactions. This enables Washington by forcing international banks to choose between sanctioned countries and the US financial system, effectively “conscripting” them into sanctions of enforcement.
  • The Strait of Hormuz is a true chokepoint because the Persian Gulf has no alternative maritime exit. Fishman warns that Iran’s use of military force to control it could normalize “militarized economic warfare” at other geographic chokepoints.
  • Looking ahead, Fishman argues that the United States should pursue allied cohesion and avoid weakening its own leverage by targeting allies as readily as adversaries. Pushing Europe, Canada, and Japan to reduce their dependence on America could leave the world “sleepwalking into autarky.”

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About the Experts
Senior Fellow and Director, Maurice R. Greenberg Center for Geoeconomics, Council on Foreign Relations
Photo of Edward Fishman
Edward Fishman is a senior research scholar at Columbia University's Center on Global Energy Policy and an adjunct professor of international and public affairs. From 2015 to 2017, he served on the Secretary's Policy Planning Staff at the US State Department, advising Secretary Kerry on Europe and Eurasia and leading work on economic sanctions and strategic planning.
Photo of Edward Fishman
President & Chief Executive Officer, Chicago Council on Global Affairs
Leslie Vinjamuri headshot
Dr. Leslie Vinjamuri joined the Council in 2025 as the president and chief executive officer, after previously serving as director of the US and the Americas program at the Royal Institute of International Affairs, known as Chatham House, in London. She is Professor of Practice in International Studies and Diplomacy at SOAS University of London.
Leslie Vinjamuri headshot

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