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"Though we have acheived progress, our work is not over. That is why I support the mission of the Arms Control Association. It is, quite simply, the most effective and important organization working in the field today." 

– Larry Weiler
Former U.S.-Russian arms control negotiator
August 7, 2018
CTB Treaty Signatories and Ratifiers
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CTB Treaty Signatories and Ratifiers

During his September 22 address to the UN General Assembly in New York, President Bill Clinton announced that he was formally transmitting the Comprehensive Test Ban (CTB) Treaty to the Senate for its advice and consent to ratification.

The treaty was opened for signature at the United Nations on September 24, 1996. On that day, 71 countries, including all five of the declared nuclear weapon states, signed the treaty. The next day, Israel—one of the three nuclear "threshold" states together with India and Pakistan—signed. As of September 1997, 147 states have signed and seven have ratified the CTB.

The CTB Treaty will formally enter into force 180 days after 44 designated states have deposited their instruments of ratification with the secretary general of the United Nations, but in no case earlier than September 24, 1998. These 44 states include the five declared nuclear weapon states, the three threshold states and 36 other states that are participating members of the Conference on Disarmament and recognized by the International Atomic Energy Agency as possessing nuclear power and/or research reactors.

Of the 44 states that must deposit instruments of ratification for formal entry into force, 41 (identified in bold in the roster below) have already signed the CTB Treaty. The other three states are India, North Korea and Pakistan. India has repeatedly stated that it will not sign the treaty, while Pakistan maintains that it will not sign unless India does. The list below identifies the states that have signed and ratified (ratifiers are identified in italics) the CTB Treaty as of September 1997.

—For more information, contact ACA.

Country Signature
Albania 9/27/96
Algeria 10/15/96
Andorra 9/24/96
Angola 9/27/96
Antigua and Barbuda 4/16/97
Argentina 9/24/96
Armenia 10/1/96
Australia 9/24/96
Austria 9/24/96
Azerbaijan 7/28/97
Bahrain 9/24/96
Bangladesh 10/24/96
Belarus 9/24/96
Belgium 9/24/96
Benin 9/27/96
Bolivia 9/24/96
Bosnia and Herzegovina 9/24/96
Brazil 9/24/96
Brunei 1/22/97
Bulgaria 9/24/96
Burkina Faso 9/27/96
Burundi 9/24/96
Cambodia 9/26/96
Canada 9/24/96
Cape Verde 10/1/96
Chad 10/8/96
Chile 9/24/96
China 9/24/96
Colombia 9/24/96
Comoros 12/12/96
Congo 2/11/97
Congo Republic1 10/4/96
Costa Rica 9/25/96
Cote d'Ivoire 9/24/96
Croatia 9/24/96
Cyprus 9/24/96
Czech Republic 11/12/96

(Ratified 9/11/97)

Denmark 9/24/96
Djibouti 10/21/96
Dominican Republic 10/3/96
Ecuador 9/24/96
Egypt 10/14/96
El Salvador 9/24/96
Equatorial Guinea 10/9/96
Estonia 11/20/96
Ethiopia 9/25/96
Fiji 9/24/96

(Ratified 10/10/96)

Finland 9/24/96
France 9/24/96
Gabon 10/7/96
Georgia 9/24/96
Germany 9/24/96
Ghana 10/3/96
Greece 9/24/96
Grenada 10/10/96
Guinea 10/3/96
Guinea Bissau 4/11/97
Haiti 9/24/96
Holy See 9/24/96
Honduras 9/25/96
Hungary 9/25/96
Iceland 9/24/96
Indonesia 9/24/96
Iran 9/24/96
Ireland 9/24/96
Israel 9/25/96
Italy 9/24/96
Jamaica 11/11/96
Japan 9/24/96

(Ratified 7/8/97)

Jordan 9/26/96
Kazakhstan 9/30/96
Kenya 11/14/96
Kuwait 9/24/96
Kyrgyzstan 10/8/96
Laos 7/30/97
Latvia 9/24/96
Lesotho 9/30/96
Liberia 10/1/96
Liechtenstein 9/27/96
Lithuania 10/7/96
Luxembourg 9/24/96
Madagascar 10/9/96
Malawi 10/9/96
Mali 2/18/97
Malta 9/24/96
Marshall Islands 9/24/96
Mauritania 9/24/96
Mexico 9/24/96
Micronesia 9/24/96

(Ratified 7/25/97)

Moldova 9/24/97
Monaco 10/1/96
Mongolia 10/1/96

(Ratified 8/8/97)

Morocco 9/24/96
Mozambique 9/26/96
Myanmar 11/25/96
Namibia 9/24/96
Nepal 10/8/96
Netherlands 9/24/96
New Zealand 9/27/96

Country Signature
Nicaragua 9/24/96
Niger 10/3/96
Norway 9/24/96
Panama 9/24/96
Papua New Guinea 9/25/96
Paraguay 9/25/96
Peru 9/25/96
Philippines 9/24/96
Poland 9/24/96
Portugal 9/24/96
Qatar 9/24/96

(Ratified 3/3/97)

Romania 9/24/96
Russia 9/24/96
Saint Lucia 10/4/96
Samoa 10/9/96
San Marino 10/7/96
Sao Tome and Principe 9/26/96
Senegal 9/26/96
Seychelles 9/24/96
Slovakia 9/30/96
Slovenia 9/24/96
Solomon Islands 10/3/96
South Africa 9/24/96
South Korea 9/24/96
Spain 9/24/96
Sri Lanka 10/24/96
Suriname 1/14/97
Swaziland 9/24/96
Sweden 9/24/96
Switzerland 9/24/96
Tajikistan 10/7/96
Thailand 11/12/96
Togo 10/2/96
Tunisia 10/16/96
Turkey 9/24/96
Turkmenistan 9/24/96
Uganda 11/7/96
Ukraine 9/27/96
United Arab Emirates 9/25/96
United Kingdom 9/24/96
United States 9/24/96
Uruguay 9/24/96
Uzbekistan 10/3/96

(Ratified 5/29/97)

Vanuatu 9/24/96
Venezuela 10/3/96
Viet Nam 9/24/96
Yemen 9/30/96
Zambia 12/3/96

NOTES

1. The Democratic Republic of The Congo, formerly Zaire. [Back to table]

Sources: UN, ACDA, and ACA.