A legal action was filed on Tuesday by Greenpeace and Nature & Youth against the Norwegian state in a bold effort by the groups to reverse the award of Barents exploration blocks under the country’s 23rd licensing round earlier this year.

A total of 13 oil companies were awarded 10 licences in the frontier Arctic region, including the newly opened south-east Barents, and state-owned Statoil intends to launch a major seven-well exploration effort next year to tap potentially huge resources in the play.

However,