A file photo taken on February 6, shows Norwegian rightwing extremist Anders Behring Breivik during a court appearance in Oslo. Breivik, who killed 77 people in twin attacks in Norway last year, goes ... more 

A file photo taken on February 6, shows Norwegian rightwing extremist Anders Behring Breivik during a court appearance in Oslo. Breivik, who killed 77 people in twin attacks in Norway last year, goes on trial in Oslo on Monday where proceedings will focus on whether or not he is sane less