What is the relationship between the CTBTO and the United Nations?
The Comprehensive Nuclear-Test-Ban Treaty (CTBT) was adopted by the UN General Assembly on 10 September 1996 and opened for signature on 24 September 1996. The UN Secretary-General is the depositary of the Treaty, and convenes, upon the request of a majority of ratifying states, the conferences on facilitating the entry into force of the Treaty (i.e. the so-called “Article XIV” conferences).
The CTBTO is an independent international organization with its own membership and budget., but it has a Relationship Agreement with the United Nations since the year 2000. The Agreement provides a framework for cooperation between the two organizations. For example, the Commission may participate in UN meetings in the same capacity as the IAEA, which is also not part of the UN Economic and Social Council (ECOSOC).
The CTBTO and the UN can also cooperate and maintain close working relationships on matters of mutual interest and concern.
As regards financial matters, the CTBTO uses the UN scale of assessed contributions as a basis for how Member States pay their scaled annual dues to the organization. The CTBTO is located at the Vienna International Centre where all the UN organizations in Vienna also have their offices.