Comprehensive Nuclear-Test-Ban Treaty

Comprehensive Nuclear-Test-Ban Treaty (CTBT)
Map of states' adoption of the CTBT
  •   Signed and ratified
      Signed but not ratified
      Non-signatory
  • !!! Sovereign states listed in Annex 2
  • !!! Sovereign states not listed in Annex 2
Signed24 September 1996; 28 years ago (1996-09-24)
LocationNew York City
EffectiveNot in force
Condition180 days after ratification by
Signatories187
Ratifiers178 (states that need to take further action for the treaty to enter into force: China, Egypt, India, Iran, Israel, North Korea, Pakistan, Russia, United States)
DepositarySecretary-General of the United Nations
LanguagesArabic, Chinese, English, French, Russian, and Spanish
www.ctbto.org

The Comprehensive Nuclear-Test-Ban Treaty (CTBT) is a multilateral treaty to ban nuclear weapons test explosions and any other nuclear explosions, for both civilian and military purposes, in all environments. It was adopted by the United Nations General Assembly on 10 September 1996, but has not entered into force, as eight specific nations have not ratified the treaty.