Explosion in Oslo

There has been a major explosion at the offices of the prime minister of Norway — it's very early in the investigation, but news sources are talking about it being caused by a bomb.

I know some good people in Norway, and I'll be visiting Oslo next month for the World Humanist Congress. It's shocking that such a civilized, peaceful place would be afflicted with this kind of horror…although, actually, no place deserves bombs going off.