North Korea claimed this morning that it detonated a hydrogen bomb. A seismic event was detected in the region, prompting overwhelming criticism from the international community—although its size, smaller than might be expected, has also evoked some skepticism. Still, it is clearly cause for concern.
The New York Times has a brief primer on what we know so far about the detonation, and the Guardian has been providing live coverage of responses and information.
I don't want North Korea to have nuclear weapons. I don't want any country, including my own, to have nuclear weapons.