Articles by Steve Fyffe, Stanford Center for Int’l Security and Cooperation

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Nuclear Expert Siegfried Hecker Assesses North Korean Hydrogen Bomb Claims
Steve Fyffe, Stanford Center for Int’l Security and Cooperation – Bulletin of the Atomic Scientists, 11 Jan 2016

7 Jan 2015 – One of the world’s top experts on the North Korean nuclear program, former Los Alamos National Laboratory director Siegfried Hecker has visited North Korea seven times since 2004; he is one of the few Western scientists to have set foot inside the Yongbyon nuclear facility.

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