The Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), and the Provisional Technical Secretariat (PTS) which forms part of the Commission, occupies a special place in the history of disarmament and non-proliferation as well as in the history of...

In 2011, the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) took further important steps towards fulfilling its mandate to promote the Treaty’s entry into force and establish the verification regime. International support for the Treaty continued to...