Originally Posted by Michael O

The max in Norway is 21 years since the philosophy of the criminal system is to reform prisoners and excessive prison sentences tend to defeat that purpose.
In this case he got 21 years but since its not a normal prison sentence he got but "detention".
Detention which are given around these part to extremely dangerous criminals and is outside the normal parameters of sentences, for Norway the minimum is 10 years, usually don't spend more than 15 and the max is 21 years unless extended it can be extended with up to 5 years every time he is about to be released by the courts if he is still deemed a risk to society, so basically he got life since I doubt he will ever not be seen a danger to society.

He got the max possible can ask for more than that.