Dutch ask sea tribunal to release Greenpeace activists By Michael Hogan HAMBURG (Reuters) - The Netherlands asked an international court on Wednesday to order Russia to release 30 people detained during a Greenpeace protest against oil drilling in the Arctic at a tribunal Moscow refused to attend. Dutch government representative Liesbeth Lijnzaad said Russia had "violated the human rights" of the activists who tried to climb onto Russia's first offshore Arctic oil rig in September, detaining them for seven weeks "without grounds." Russia has said it does not recognize the case, accusing the activists and their ship, the Dutch-registered Arctic Sunrise, of posing a security threat. Prosecutors charged the 30 with piracy, but lessened the charge to hooliganism, which carries a maximum jail term of seven years. President Vladimir Putin has said they are not pirates but has faced growing criticism in the West over what is seen as Russia's heavy-handed treatment of the case. "The dispute is worsening," Lijnzaad told the International Tribunal for the Law of the Sea in the German port of Hamburg. Countries have no right to seize vessels belonging to third countries in their exclusive maritime economic zones, she said. The Dutch hope the tribunal will rule by mid-November, securing the provisional release of the 30 activists who have been denied bail in a case that has strained relations between Russia and the West, particularly the Netherlands. A tribunal spokeswoman said no date had yet been set for a decision but that it could come around November 21. "We are very grateful to the Dutch government for bringing this case and to the tribunal for considering it," Greenpeace international general counsel Jasper Teulings told Reuters. Russia's Investigative Committee, which is handling the case, reduced initial charges of piracy to hooliganism in late October, cutting the maximum jail term from 15 years to seven, . But Teulings said as far as Greenpeace was aware the 30 were now charged with piracy as well as hooliganism. "Nothing has changed despite the statement by Putin and from the investigative committee that the charges would be requalified to hooliganism," Teulings said. As far as we are aware all 30 are still charged with both hooliganism and piracy. Prime Minister Dmitry Medvedev last week reiterated Moscow's stance that Greenpeace posed a threat to the security of Russian workers and the environment by disturbing work at the platform. The Dutch foreign minister has also denounced Russia's law banning homosexual "propaganda" among minors and said the violation of gay rights could be grounds for asylum in his country. Reporting by Michael Hogan and Alexandra Hudson; Editing by Stephen Brown and Elizabeth Piper