"Such sentences can be extended as long as an inmate is considered too dangerous to be released. Legal experts have said that in Breivik's case that could mean he will spend the rest of his life in prison."
Part of today's ruling also focused on the issue of whether Breivik is sane enough to be held criminally responsible for the slaughter. The court concluded he is.
On Morning Edition today, New York Times correspondent Alan Cowell said the verdict and sentence is something of a victory for Brevik because he did not want to be declared insane. "If he'd been found insane, he could have been treated indefinitely," Cowell said. Also, in Breivik's mind the sanity judgment lends credibility to his crimes.