System Update with Glenn Greenwald Prof. John Mearsheimer on Why Foreign Involvement in Iran Would Fail, U.S. Aggression Toward Venezuela, Trump's Foreign Policy, and More
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Jan 14, 2026 
John Mearsheimer, an international relations scholar known for his realist perspectives, dives into critical issues like U.S. involvement in Venezuela and Iran. He critiques Trump's actions as imperialistic, discussing how limited military strategies often backfire. Mearsheimer warns that any U.S. intervention in Iran could unite the populace against their government. He explores the dangers of sanctions and de-dollarization, highlights the power of nationalism, and predicts a grim future for diplomatic resolutions in Ukraine.
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Pinprick Warfare Avoids Quagmires
- Mearsheimer credits Trump with limited 'pinprick' military operations that avoid long quagmires and heavy occupation.
- He views this as a strategic choice to gain leverage without committing to nation-building.
Avoid Old-Fashioned Resource Grab
- Avoid classic territorial imperialism because modern nationalism makes it costly and counterproductive.
- Mearsheimer warns stealing resources will provoke long-term regional animosity and limited economic gains.
China's Non-Ideological Global Appeal
- Mearsheimer contrasts the U.S. crusading to export liberal democracy with China's non-ideological approach.
- He argues China doesn't lecture other countries and thus faces less political backlash than the U.S.