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North Korea panics the world, but 'H-bomb' test changes little

Trump threatened the north with 'fire and fury' in retaliation for its long-range missile tests

North Korea nuclear test, Kim Jong-un, Nuclear tes
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People watch a TV news reporting about a possible nuclear test conducted by North Korea ,at the Seoul Railway station in Seoul, South Korea. (Photo: PTI)

Virginie Grzelczyk | The Conversation

North Korea has conducted its sixth nuclear device test, and based on what we know so far it looks like by far the biggest yet. Pyongyang’s own news agency, KCNA, described the test as a “perfect success”, and claimed the device was an advanced hydrogen bomb small enough to fit atop a long-range missile.

Though it’s still too soon to confirm whether that’s true, whatever the north tested was clearly much larger than its previous devices. Seismic readings detected the blast via a 6.3 magnitude earthquake, and Norway’s NORSAR seismological observatory suggested the explosive yield would translate to