Glenn Diesen - Greater Eurasia Podcast John Mearsheimer: U.S. Already Lost Iran War - No Off-Ramp in Sight
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Mar 11, 2026 
John Mearsheimer, a University of Chicago international-relations scholar known for realism and strategic analysis, argues the U.S. has already lost a war with Iran and sees no off-ramp. He discusses Iran’s incentives to escalate, Gulf vulnerabilities like oil and desalination, limits of air power and decapitation, and how the conflict reshapes Russian, Chinese, and European calculations.
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No Off-Ramp For A Decisive U.S. Victory
- The United States lacks a plausible off-ramp in its war with Iran and cannot plausibly force a settlement on American terms.
- Iran can absorb massive punishment and escalate asymmetrically with accurate drones and ballistic missiles, prolonging a war of attrition to extract concessions.
Gulf States Face Critical Infrastructure Vulnerability
- The Gulf states are extraordinarily vulnerable to Iranian strikes on a few concentrated targets like petroleum and desalination infrastructure.
- Destroying key desalination plants and oil facilities could collapse Gulf economies and create humanitarian crises, giving Iran leverage over global energy markets.
Air Power Alone Cannot Win Against Iran
- Strategic air power alone cannot produce regime change or decisive victory against Iran without significant ground forces.
- Historical cases (WWII, Korea, Vietnam, Iraq 2003) show bombing and sanctions have real limits; air campaigns can punish but not compel surrender.