Statement by First Secretary Daisuke Marumoto at the Fifty-Ninth Session of Working Group B of the Preparatory Commission for the CTBTO

Thank you, Chair.
Let me first thank you, Mr. Erlan Batyrbekov, for your leadership in holding the 59th Session of Working Group B of the Preparatory Commission, as well as each Task Leader, Chair of the expert group meeting and the PTS for their dedicated work.
We welcome the ratification of the CTBT by the Commonwealth of Dominica and the Democratic Republic of Timor-Leste in June and August respectively. Japan applauds these achievements as a clear example of the vigorous outreach activities by the Executive Secretary to promote the entry into force of the treaty.
Japan is firmly determined to lead international efforts towards achieving a world without nuclear weapons under the leadership of Prime Minister KISHIDA Fumio, with roots from Hiroshima. As he stated during the General Debate at the 10th Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) this month, it is necessary to build a roadmap that will take us from the "reality" we face in the harsh security environment to our "ideal" of “a world without nuclear weapons” and to press forward with realistic nuclear disarmament efforts.
With this in mind, in order to build momentum towards facilitating the entry into force of the CTBT, Prime Minister Kishida, in his role as a co- chair, will convene a meeting of the CTBT Friends at leader’s level during the United Nations General Assembly in September. We will do our utmost for the meeting to be successful.
[Challenges against the Nuclear Disarmament & Non-Proliferation Regime]

With the use of nuclear weapons now becoming a real possibility, we call for a shared recognition on the importance of CTBT, which will constrain the proliferation, the development and qualitative improvement of nuclear weapons.

[IMS and IDC] 


We commend the PTS and all States Signatories, as well as the station operators, for their tireless efforts to ensure the reliability and sustainability of the operation of the IMS facilities, especially in the midst of this challenging time.
At the same time, we welcome the completion of the installation of RN02 in Argentina, which demonstrates the steady development in strengthening the verification regime of the Treaty. We also applaud the upward trend in data availability for all monitoring technologies, with the exception of auxiliary seismic stations, during the first half of 2022 in comparison to the second half of 2021.
We would like to point out that cooperation among States Signatories of CTBT is imperative to ensure a high level of data availability from IMS stations. In this regard, we kindly request all States Signatories to work closely with the PTS to maintain and strengthen the IMS stations.



OSI is the final and definitive measure to verify compliance by States with the Treaty. In this regard, Japan will continue to contribute to advancing future planning on OSI related exercises by dispatching experts to the OSI Consultative Group of Experts.

[Next-Generation Noble Gas Systems] 


We look forward to the progress on the deployment of next-generation noble gas systems at this meeting, while taking into consideration its financial implications.
We hope that the next-generation noble gas systems will contribute to strengthening the capability of detecting nuclear tests by improving sensitivity and time resolution to detect noble gas.

[Closing Remarks] 


WGB plays an important role in discussing the technical matters necessary to finalize the verification regime of the treaty. We look forward to the fruitful outcomes through the technical discussions at this session, in pursuit of our common goal, namely implementation and steady build-up of the verification regime.
Thank you, Chair.