Well, once his life sentence is up, (in Norway it is 21 years), he can be sentenced by a court to an extension of 5 years at a time if they feel it necessary. And I think he will be facing many such extensions.
Well, dropping ‘dumb bombs’ is actually much cheaper than firing expensive guided missiles designed for missile interception. Even though the US has a bunch of money, at some point a waste of dollars is too much even for them.
I’d recommend checking out Planetary Annihilation, Planetary Annihilation:Titans, Supreme Commander 1/2 and their mods