The Netherlands said Friday it has started legal action to free 30 crew members of Greenpeace\'s Arctic Sunrise, charged by Russia with piracy after a protest against Arctic oil drilling. \"The Netherlands, as the state under whose flag the Arctic Sunrise sails, today started an arbitration process on the basis of the UN Convention of the Law of the Sea... against what it sees as the unlawful detention of the ship (and) to have it released and its crew freed,\" Foreign Minister Frans Timmermans said in a letter in parliament.