“Helicopter” - an activist yells. Then gun-wielding agents in balaclavas abseil down, onto the Greenpeace ship, to tow it to Russia.

This is the story of a campaign against oil drilling in the arctic that takes a dangerous turn. And the debate it sparks within the movement - should the organisers have better anticipated the risks of their campaign? Who is responsible for activists’ safety?

Presenter: Justin Rowlatt

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