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 »