Bruce Bennett

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In December, North Korean leader Kim Jong Un claimed that his country had become a "powerful nuclear weapons state ready to detonate a hydrogen bomb," a so-called H-bomb. If true, the advance would mark a significant step up in the state's arsenal, and would be further cause for concern over an unpredictable and perhaps unstable regime.

But it's a big "if."

Countries working on nuclear weapons usually first develop nuclear weapons that use fission to break large atoms like uranium or plutonium into smaller atoms, creating considerable energy. A subsequent step is to develop fusion weapons, where small atoms like hydrogen are combined to generate immense amounts of energy.…  Seguir leyendo »