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US military action in Iran risks igniting a regional and global nuclear cascade

  • Written by Farah N. Jan, Senior Lecturer in International Relations, University of Pennsylvania
US military action in Iran risks igniting a regional and global nuclear cascadeIranian youths walk past a building covered with a giant billboard depicting an image of the destroyed USS Abraham Lincoln.Morteza Nikoubazl/NurPhoto via Getty Images

The United States is seemingly moving toward a potential strike on Iran.

On Jan. 28, 2026, President Donald Trump sharply intensified his threats to the Islamic Republic, suggesting...

Read more: US military action in Iran risks igniting a regional and global nuclear cascade

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