 
           Political embarassment ... Sea Shepherd's Ady Gil after a confrontation with a Japanese whaling ship in 2010. Photograph: Sea Shepherd Conservation Society/EPA
Japan and the US proposed to investigate and act against international anti-whaling activists
 To drive from the Sea Shepherd Conservation Society as part of a political deal to reduce whaling in Antarctic waters.
Four confidential cables from the US embassy in Tokyo and the state department in Washington, released by WikiLeaks, show US and Japanese diplomats secretly negotiating a compromise agreement ahead of a key meeting last year of the International Whaling Commission, the body that regulates international whaling.
The  American proposal would have forced Japan to reduce the number of  whales that Japan killed each year in the Antarctic whale sanctuary in  return for the legal right to hunt other whales off its own coasts. In  addition, the US proposed to ratify laws that would "guarantee security  in the seas" – a reference to acting against groups such as Sea Shepherd  that have tried to physically stop whaling.
The US  proposal was eventually shot down by Britain and the EU in June 2010,  but the cables show that the Sea Shepherd group had become a political  embarrassment to Japan after stopping its whaling fleet reaching its  annual quota of whale killed for several years.
The group, led by Captain Paul Watson,  a co-founder of Greenpeace, has a reputation for physically confronting  whalers, sealers and illegal fishing boats. Its flotilla of ships,  which sport the skull and crossbones flag, monitors illegal fishing in  the Galapagos islands and spends months each year following and  harassing the Japanese whaling fleet in frequently dangerous clashes.
Yesterday  two Sea Shepherd ships, the Steve Irwin and the Gojira were involved in  cat and mouse skirmishes with two whaling ships. Activists reportedly  hurled stink bombs onto the deck as whalers tried to use water cannon.
The  US cables show how on 2 November 2009, Shuji Yamada, Japan's  vice-minister for international affairs, asked lead US negotiator Monica  Medina about an investigation of the tax affairs of Sea Shepherd. It is  unclear whether the US government had already launched an investigation  or which country had proposed it.
"Yamada inquired about  an investigation into the tax status of the US-based NGO Sea Shepherd  Conservation Society and repeated Japan's request for the US to take  action against the organisation, which he said created a very dangerous  situation on the seas," says one cable.
The  US government dodged this request but the cable continues: "The DCM  replied that the US places the highest priority on the safety of vessels  and human life at sea, and added that if any violations of US law are  discovered, we will take appropriate enforcement action".
But  the Japanese diplomats then responded, "It would be easier for Japan to  make progress in the IWC negotiations if the US were to take action  against the Sea Shepherd".
One week later, the Japanese  pressed the US to take action against Sea Shepherd again, saying that  "violent protests by the Sea Shepherd Conservation Society (SSCS) could  limit the government of Japan's flexibility in the negotiations".
It  appears from the diplomatic chatter that the US did look into the NGO's  status. In the same cable, Medina is reported as saying that the US  government, "can demonstrate the group [Sea Shepherd] does not deserve  tax exempt status based on their aggressive and harmful actions".
The cables then suggest that the US had itself proposed the tax investigation of Sea Shepherd, saying in the same cable on 9 November 2009:  "the Netherlands should have primary responsibly for taking action  against the SSCS, but he [the Japanese diplomat] appreciates the US  government initiative to address the group's tax exempt status".
The US attempt to compromise with Japan failed at the IWC meeting in June after a majority of countries, led by Australia, the European Union, and the Latin American nations rejected it.
In  a statement made yesterday from the Sea Shepherd flagship, Captain  Watson said: "The US government may have very well looked into Sea  Shepherd's activities and if they did so, then they obviously did not  find any irregularities or unlawful activities because Sea Shepherd was  never contacted by any US government official in connection with this  matter. For Sea Shepherd, the most important part of this document is  the declaration by Japan that Sea Shepherd has been responsible for the  whaling fleet not reaching their quotas for the last few years. This  completely validates Sea Shepherd's actions as effective."
WikiLeaks: Secret whaling deal plotted by US and Japan | Environment | guardian.co.uk
