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U.S. Department of State

Department Seal Comprehensive Nuclear Test Ban Treaty Signatories/Ratifiers
Fact Sheet Released by the Bureau of Arms Control
Washington, DC, November 15, 2000

The Comprehensive Test Ban Treaty (CTBT) was opened for signature on September 24, 1996. President Clinton was the first to sign the Treaty. As of November 10, 2000, 160 nations have signed, including all five nuclear-weapon states, and 67, including France and the United Kingdom, have deposited their instruments of ratification. The Treaty names 44 states that must deposit their instruments of ratification for it to enter into force.  Of these, 30 have now ratified.

 The CTBT was negotiated over a period of two-and-a-half years in the Conference on Disarmament (CD) in Geneva. However, the CD was not able to reach a consensus decision to forward the text to the United Nations. On August 22, 1996, Australia requested the Secretary General of the United Nations to reconvene the 50th United Nations General Assembly (UNGA) for the purpose of receiving and acting on the Treaty. On September 10, 1996, the UNGA adopted the CTBT by a vote of 158 to 3, with 5 abstentions.

 On November 19, 1996, the signatories adopted a resolution establishing the Preparatory Commission (Prepcom) for the CTBT Organization (CTBTO). The CTBTO Prepcom consists of all signatory states, and meets in Vienna. It has established two working groups, on verification and administration, and a Provisional Technical Secretariat (PTS). Under Prepcom direction the PTS is working to establish the verification regime required by the Treaty. This includes the International Monitoring System, with global monitoring capabilities in four technologies -- seismic, hydroacoustic, radionuclide, and infrasound; the International Data Center, for receiving and processing data from the monitoring stations; and capabilities for carrying out on-site inspections, once the Treaty enters into force.

 The President transmitted the CTBT to the Senate in September 1997 for its advice and consent to ratification. In his January 19 State of the Union address, President Clinton called on the Senate to approve the Treaty this year, asking the Senate to "take this vital step, approve the Treaty now to make it harder for other nations to develop nuclear arms, and to make sure we can end nuclear testing forever."

Bold: One of 44 countries whose ratification is required for Entry-Into-Force

Participant Signature Ratification
Albania9/27/96
Algeria10/15/96
Andorra9/24/96
Angola9/27/96
Antigua and Barbuda4/16/97
Argentina9/24/9612/4/98
Armenia 10/1/96
Australia 9/24/967/9/98
Austria9/24/963/13/98
Azerbaijan7/28/972/2/99
Bahrain9/24/96
Bangladesh10/24/963/8/00
Belarus9/24/969/13/00
Belgium9/24/966/29/99
Benin9/27/96
Bolivia 9/24/9610/4/99
Bosnia and Herzegovina 9/24/96
Brazil9/24/967/24/98
Brunei Darussalam1/22/97
Bulgaria9/24/969/29/99
Burkina Faso9/27/96
Burundi9/24/96
Cambodia9/26/9611/10/00
Canada9/24/9612/18/98
Cape Verde10/1/96
Chad 10/8/96
Chile9/24/967/12/00
China9/24/96
Colombia9/24/96
Comoros12/12/96
Congo, Republic of (Brazzaville)10/4/96
Congo, Democratic Republic of (Kinshasa)10/4/96
Cook Islands12/5/97
Costa Rica9/24/96
Cote d'Ivoire9/25/96
Croatia9/24/96
Cyprus9/24/96
Czech Republic11/12/969/8/97
Denmark 9/24/9612/21/98
Djibouti10/21/96
Dominican Republic10/3/96
Ecuador9/24/96
Egypt10/14/96
El Salvador9/24/969/14/98
Equatorial Guinea 10/9/96
Estonia11/20/968/13/99
Ethiopia9/25/96
Fiji9/24/9610/10/96
Finland9/24/961/15/99
France9/24/964/6/98
Gabon 10/7/969/20/00
Georgia9/24/96
Germany9/24/968/20/98
Ghana10/3/96
Greece9/24/964/21/99
Grenada10/10/968/19/98
Guatemala 9/20/99 
Guinea10/3/96
Guinea-Bissau4/11/97
Guyana 9/7/00
Haiti9/24/96
Holy See 9/24/96
Honduras9/25/96
Hungary9/25/967/13/99
Iceland9/24/966/26/00
India
Indonesia9/24/96
Iran (Islamic Rep. of)9/24/96
Ireland 9/24/967/15/99
Israel9/25/96
Italy9/24/962/1/99
Jamaica11/11/96
Japan9/24/967/8/97
Jordan9/26/968/25/98
Kazakhstan9/30/96
Kenya11/14/96
Kiribati 9/7/00 9/7/00
Kuwait9/24/96
Kyrgyzstan10/8/96
Lao People's Democratic Republic7/30/9710/5/00
Latvia9/24/96
Lesotho9/30/969/14/99
Liberia10/1/96
Liechtenstein9/27/96
Lithuania 10/7/962/7/00
Luxembourg9/24/965/26/99
Madagascar10/9/96
Malawi 10/9/96
Malaysia7/23/98
Maldives10/1/979/7/00
Mali 2/18/978/4/99
Malta9/24/96
Marshall Islands9/24/96
Mauritania9/24/96
Mexico9/24/9610/5/99
Micronesia (Federated States of)9/24/967/25/97
Moldova9/24/97
Monaco 10/1/9612/18/98
Mongolia10/1/968/8/97
Morocco 9/24/964/17/00
Mozambique9/26/97
Myanmar11/25/96
Namibia9/24/96
Nauru9/8/00
Nepal10/8/96
Netherlands9/24/963/23/99
New Zealand9/27/963/19/99
Nicaragua9/24/96
Niger10/3/96
Nigeria9/8/00
North Korea
Norway9/24/967/15/99
Oman9/23/99
Pakistan
Panama9/24/963/23/99
Papua New Guinea9/25/96
Paraguay9/25/96
Peru9/25/9611/12/97
Philippines9/24/96
Poland9/24/965/25/99
Portugal9/24/966/26/00
Qatar 9/24/963/3/97
Republic of Korea9/24/969/24/99
Romania9/24/9610/5/99
Russian Federation9/24/966/30/00
Saint Lucia 10/4/96
Samoa10/9/96
San Marino10/7/96
Sao Tome and Principe 9/26/96
Senegal9/26/966/9/99
Seychelles9/24/96
Sierra Leone9/8/00
Singapore1/14/99
Slovakia9/30/963/3/98
Slovenia 9/24/968/31/99
Solomon Islands10/3/96
South Africa9/24/963/30/99
Spain9/24/967/31/98
Sri Lanka10/24/96
Suriname1/14/97
Swaziland9/24/96
Sweden9/24/9612/2/98
Switzerland9/24/9610/1/99
Tajikistan10/7/966/10/98
Thailand11/12/96
The Former 
Yugoslav Republic 
of Macedonia
10/29/983/14/00
Togo10/2/96
Tunisia10/16/96
Turkey9/24/962/16/00
Turkmenistan9/24/962/20/98
Uganda11/7/96
Ukraine9/27/96
United Arab Emirates9/25/969/18/00
United Kingdom9/24/964/6/98
United States9/24/96
Uruguay9/24/96
Uzbekistan10/3/975/29/97
Vanuatu9/24/96
Venezuela10/3/97
Vietnam9/24/96
Yemen9/30/96
Zambia12/3/96
Zimbabwe10/13/99
TOTAL: 160 Signed;  67 Ratified
Changes from previous Fact Sheet in italics
[end of document]


Bureau of Arms Control | Department of State