Oh I'd take them seriously alright. All they have to do is put one inside a ship and sail it inside a harbour. Or in the back of a semi. That's a risk not wort

Oh I'd take them seriously alright. All they have to do is put one inside a ship and sail it inside a harbour. Or in the back of a semi. That's a risk not worth taking. They have exploded several, they're a credible threat now. But they only seem to be interested in using it as a deterrent, which is the sane choice given mutually assured destruction. They won't use them offensively as they'll just get wiped out. If they had been attacked before building them I'm sure many people in Seoul would have died from artillery attacks and perhaps China would have got into a hot war with the US. I think we're better off that it didn't. I'm pretty sure Iran would have done the same thing.. They're pretty sane too. Evil and terrible murderers to their citizens but they're not going to play nuclear chicken with a thousand times more powerful enemy.