The letter (attached), which was also delivered by a delegation of Japanese legislators to the US ambassador to Japan John V. Roos, supports the US objective to achieve a world without nuclear weapons as outlined in Obama’s April 2009 Prague speech, encourages the US and Russia to conclude negotiations on stockpile reductions, and calls on the US to adopt as a first step a ’sole purpose’ policy, i.e. that U.S. nuclear weapons would only be for deterrence against the threat or use of nuclear weapons from other nuclear-armed States. This would include assurances that nuclear weapons would not be threatened or used against non-nuclear States. The letter also asserts that Japan will not seek the road toward possession of nuclear weapons if the U.S. adopts such a policy.

Endorsers of the letter include leading members of all political parties such as Yoriko Kawaguchi (LDP – Co-chair of the International Commission on Nuclear Nonproliferation and Disarmament and a former Foreign Minister), Taro Kono (LDP – Former Chair of the Foreign Affairs Committee), Senator Tadashi Inuzuka (DPJ from Nagasaki), Mizuho Fukushima (SDP) and Masao Akamatsu (Komei-to).

On February 9, Japanese Prime Minister Hatoyama commented favourably in the Diet (Japanese Parliament) on Hiraoka’s initiative, indicating that it was in accordance with his government’s commitment to maintaining the Japanese three non-nuclear principles and his support for nuclear disarmament.

In addition, Hiraoka’s initiative reinforces some of the key ideas in a letter sent by Japanese Foreign Minister Katsuya Okada (also a PNND member) to Hillary Clinton in December 2009. In the letter (attached below) Okada reaffirmed the importance of the Japan-US Security Treaty which includes extended nuclear deterrence, but distanced himself from aspects of the previous Japanese administration’s nuclear policy.

In particular, Okada expressed concerns that Japanese officials may have lobbied the US not to reduce its nuclear arsenal – a position which “would clearly be at variance with my views, which are in favor of nuclear disarmament” (unofficial English translation) . Okada’s letter also supported the idea that the role of nuclear weapons be restricted to deterrence of the use of nuclear weapons, and that the use of nuclear weapons against non-nuclear weapon state members of the NPT be banned.