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People watch a TV news program showing North Korea's announcement, at the Seoul Railway Station in Seoul, South Korea, Wednesday, Jan. 6, 2016. North Korea said Wednesday it had conducted a hydrogen bomb test, a defiant and surprising move that, if confirmed, would put Pyongyang a big step closer toward improving its still-limited nuclear arsenal. The letters read " Will not use nuclear weapon if autonomy secured."  (AP Photo/Ahn Young-joon)
People watch a TV news program showing North Korea's announcement, at the Seoul Railway Station in Seoul, South Korea, Wednesday, Jan. 6, 2016. North Korea said Wednesday it had conducted a hydrogen bomb test, a defiant and surprising move that, if confirmed, would put Pyongyang a big step closer toward improving its still-limited nuclear arsenal. The letters read " Will not use nuclear weapon if autonomy secured."  (AP Photo/Ahn Young-joon)

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Estruendo y miedo por bomba de hidrógeno

Corea del Norte asegura que un sismo de magnitud 5,1 se debió a las pruebas nucleares que realizaron con éxito. ¿Qué pasaría si una bomba H cae en una ciudad?

Estruendo y miedo por bomba de hidrógeno

Corea del Norte asegura que un sismo de magnitud 5,1 se debió a las pruebas nucleares que realizaron con éxito. ¿Qué pasaría si una bomba H cae en una ciudad?