Dutch Greenpeace activists Faiza Oulahsen and Mannes Ubels arrived back in the Netherlands on Friday, months after being held during protests in the Arctic Sea.

The duo were part of the 30-strong crew of protest ship Arctic Sunrise and had faced piracy charges. They were released as part of an amnesty last week.

Oulahsen told reporters on her arrival at Schiphol airport she was revising her protest strategy. ‘I have my doubts about whether I would take exactly the same approach at the same place for a second time,’ she said. ‘The Russians have made a strong statement. I think we have to be more creative in our tactics in Russia.’

Ubels, who was the ship’s engineer, said he wants to ensure the Arctic Sunrise is brought back to the Netherlands. The boat is still in Murmansk port where it was towed after being seized.