The Tenth Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons decided to establish a Working Group on further strengthening the review process of the Treaty, open to all States parties (see NPT/CONF.2020/DEC.2).

States Parties subsequently decided by silence procedure to hold the meeting of the Working Group from 24-28 July 2023 at the United Nations Office in Vienna. It will be chaired by the chair-designate of the First Preparatory Committee meeting, H.E. Ambassador Jarmo Viinanen of Finland. Documentation for the Working Group will only include translation for official documents – namely the rules of procedure, the agenda and the final report of the meeting – and that working papers will be circulated as received, and that summary records will not be taken.

Information for Participants


NPT/CONF.2026/WG.I/INF/1/Rev.1: Information for States parties, observer States and intergovernmental organizations

NPT/CONF.2026/WG.I/INF/2/Rev.1: Information for non-governmental organizations

NPT/CONF.2026/WG.I/INF/3: Indicative timetable

NPT/CONF.2026/WG.I/INF/4: Timetable (summarized)


The Secretariat of the Working Group meeting can be contacted at: npt@un.org.