Author

Siegfried Hecker

By this author

Lessons From Los Alamos

America Has the Most to Lose From Restarting Nuclear Testing

Siegfried Hecker

November 26, 2025

What We Really Know About North Korea’s Nuclear Weapons

And What We Don’t Yet Know for Sure

Siegfried S. Hecker

December 4, 2017

What I Found in North Korea

Pyongyang’s Plutonium Is No Longer the Only Problem

Siegfried S. Hecker

December 9, 2010