Royal Dutch Shell PLC is suing Greenpeace International in Dutch court in an attempt to end protests against its plans to drill for offshore oil in the Artic Sea.

Shell wants the environmental organization fined €1 million ($1.3 million) if any of its members approach within 500 meters (yards) of any Shell property.

The suit shows Shell going on an offensive to protect its $4.5 billion investment in two projects off the coast of Alaska it says will create hundreds of jobs.

Greenpeace says Artic drilling is harmful and risky and has protested with publicity stunts around the world. The trigger for Friday’s suit was a Sept. 14 protest in which activists blocked Shell gas stations in the Netherlands by clamping gas pumps together with bike locks.