Seventy-six states have ratified the Treaty. France, the Russian Federation and the UK are the only nuclear-weapon states to have completed ratification. The Treaty will enter into force 180 days after it has been ratified by the 44 states.
Further details appear below.
This page was last updated on 14 June 2001. In October 1997 and 1998 Congressional testimony on the CTBT and maintenance of the US nuclear stockpile was given before the Energy and Water Development Appropriations Subcommittee and the Senate Committee on Armed Services. These focused on the US ability to maintain its nuclear arsenal under the Treaty and to monitor nuclear testing by other countries. John Holum, Acting Under Secretary of State for Arms Control and International Security Affairs testified on behalf of the Administration that the CTBT is effectively verifiable, improves monitoring capabilities, and enhances nonproliferation efforts. CTBT ratification in the US has been difficult.