GRN correspondent Nina Burgland in Oslo is available for coverage.

BBC: As Anders Behring Breivik's trial progresses in Oslo district court, the big question remains whether he can be considered responsible for his actions. The penal codes of most Western countries allow for punishment to be adjusted according to the severity of the criminal act. In addition, the perpetrator's level of responsibility for their actions is usually considered. Other legal systems, such as the Sharia-based one of Iran, also make allowances for diminished responsibility.