OSLO, Norway — The self-described perpetrator of Norway’s deadly bombing and shooting rampage was ordered held in solitary confinement Monday after calmly telling a court that two other cells of collaborators stood ready to join his murderous campaign.

Anders Behring Breivik, who has admitted bombing the capital and opening fire on a youth group retreat on an island resort, told authorities he expects to spend the rest of his life in prison. Declaring he wanted to save Europe from “Muslim domination,” he entered a plea of not guilty that will guarantee him future court hearings and opportunities to address the public, even indirectly. . .