Fact Sheet
Bureau of Arms Control, Verification and Compliance
April 9, 2012


[This fact sheet has been updated; see current version.]

Key Point: As of December 6, 183 nations have signed the Comprehensive Nuclear Test-Ban Treaty (CTBT), and 157 have ratified it. Of the 44 States whose deposit of instruments of ratification are specifically required by the CTBT for its entry into force, 41 have signed the Treaty and 36 have ratified it.

*Denotes status as an Annex 2 State. These 44 states must sign, ratify, and deposit their instruments of ratification for the CTBT in order for the Treaty to enter into force.

**Denotes states that are not signatories or have not completed the ratification process.

If a scroll bar appears below the following table, swipe the table to move left/right of the dashed line.

STATES

SIGNATURE

RATIFICATION

Afghanistan

24-Sep-2003

24-Sep-2003

Albania

27-Sep-1996

23-Apr-2003

Algeria*

15-Oct-1996

11-Jul-2003

Andorra

24-Sep-1996

12-Jul-2006

Angola**

27-Sep-1996

Antigua and Barbuda

16-Apr-1997

11-Jan-2006

Argentina*

24-Sep-1996

04-Dec-1998

Armenia

01-Oct-1996

12-Jul-2006

Australia*

24-Sep-1996

09-Jul-1998

Austria*

24-Sep-1996

13-Mar-1998

Azerbaijan

28-Jul-1997

02-Feb-1999

Bahamas

04-Feb-2005

30-Nov-2007

Bahrain

24-Sep-1996

12-Apr-2004

Bangladesh*

24-Oct-1996

08-Mar-2000

Barbados

14-Jan-2008

14-Jan-2008

Belarus

24-Sep-1996

13-Sep-2000

Belgium*

24-Sep-1996

29-Jun-1999

Belize

14-Nov-2001

26-Mar-2004

Benin

27-Sep-1996

06-Mar-2001

Bhutan**

Bolivia

24-Sep-1996

04-Oct-1999

Bosnia and Herzegovina

24-Sep-1996

26-Oct-2006

Botswana

16-Sep-2002

28-Oct-2002

Brazil*

24-Sep-1996

24-Jul-1998

Brunei**

22-Jan-1997

Bulgaria*

24-Sep-1996

29-Sep-1999

Burkina Faso

27-Sep-1996

17-Apr-2002

Burma**

25-Nov-1996

Burundi

24-Sep-1996

24-Sep-2008

Cambodia

26-Sep-1996

10-Nov-2000

Cameroon

16-Nov-2001

06-Feb-2006

Canada*

24-Sep-1996

18-Dec-1998

Cape Verde

01-Oct-1996

01-Mar-2006

Côte d'Ivoire

25-Sep-1996

11-Mar-2003

Central African Republic

19-Dec-2001

26-May-2010

Chad**

08-Oct-1996

Chile*

24-Sep-1996

12-Jul-2000

China* **

24-Sep-1996

Colombia*

24-Sep-1996

29-Jan-2008

Comoros**

12-Dec-1996

Congo**

11-Feb-1997

Cook Islands

05-Dec-1997

06-Sep-2005

Costa Rica

24-Sep-1996

25-Sep-2001

Croatia

24-Sep-1996

02-Mar-2001

Cuba**

Cyprus

24-Sep-1996

18-Jul-2003

Czech Republic

12-Nov-1996

11-Sep-1997

Democratic Republic of Congo*

04-Oct-1996

28-Sep-2004

Denmark

24-Sep-1996

21-Dec-1998

Djibouti

21-Oct-1996

15-Jul-2005

Dominica**

Dominican Republic

03-Oct-1996

04-Sep-2007

Ecuador

24-Sep-1996

12-Nov-2001

Egypt* **

14-Oct-1996

El Salvador

24-Sep-1996

11-Sep-1998

Equatorial Guinea**

09-Oct-1996

Eritrea

11-Nov-2003

11-Nov-2003

Estonia

20-Nov-1996

13-Aug-1999

Ethiopia

25-Sep-1996

08-Aug-2006

Fiji

24-Sep-1996

10-Oct-1996

Finland*

24-Sep-1996

15-Jan-1999

France*

24-Sep-1996

06-Apr-1998

Gabon

07-Oct-1996

20-Sep-2000

Gambia**

09-Apr-2003

Georgia

24-Sep-1996

27-Sep-2002

Germany*

24-Sep-1996

20-Aug-1998

Ghana

03-Oct-1996

14-Jun-2011

Greece

24-Sep-1996

21-Apr-1999

Grenada

10-Oct-1996

19-Aug-1998

Guatemala**

20-Sep-1999

Guinea

03-Oct-1996

19-Sep-2011

Guinea-Bissau**

11-Apr-1997

Guyana

07-Sep-2000

07-Mar-2001

Haiti

24-Sep-1996

01-Dec-2005

Holy See

24-Sep-1996

18-Jul-2001

Honduras

25-Sep-1996

30-Oct-2003

Hungary*

25-Sep-1996

13-Jul-1999

Iceland

24-Sep-1996

26-Jun-2000

India* **

Indonesia*

24-Sep-1996

6-Feb-2012

Iran* **

24-Sep-1996

Iraq**

19-Aug-2008

Ireland

24-Sep-1996

15-Jul-1999

Israel* **

25-Sep-1996

Italy*

24-Sep-1996

01-Feb-1999

Jamaica

11-Nov-1996

13-Nov-2001

Japan*

24-Sep-1996

08-Jul-1997

Jordan

26-Sep-1996

25-Aug-1998

Kazakhstan

30-Sep-1996

14-May-2002

Kenya

14-Nov-1996

30-Nov-2000

Kiribati

07-Sep-2000

07-Sep-2000

Kuwait

24-Sep-1996

06-May-2003

Kyrgyzstan

08-Oct-1996

02-Oct-2003

Laos

30-Jul-1997

05-Oct-2000

Latvia

24-Sep-1996

20-Nov-2001

Lebanon

16-Sep-2005

21-Nov-2008

Lesotho

30-Sep-1996

14-Sep-1999

Liberia

01-Oct-1996

17-Aug-2009

Libya

13-Nov-2001

06-Jan-2004

Liechtenstein

27-Sep-1996

21-Sep-2004

Lithuania

07-Oct-1996

07-Feb-2000

Luxembourg

24-Sep-1996

26-May-1999

Madagascar

09-Oct-1996

15-Sep-2005

Malawi

09-Oct-1996

21-Nov-2008

Malaysia

23-Jul-1998

17-Jan-2008

Maldives

01-Oct-1997

07-Sep-2000

Mali

18-Feb-1997

04-Aug-1999

Malta

24-Sep-1996

23-Jul-2001

Marshall Islands

24-Sep-1996

28-Oct-2009

Mauritania

24-Sep-1996

30-Apr-2003

Mauritius**

Mexico*

24-Sep-1996

05-Oct-1999

Micronesia

24-Sep-1996

25-Jul-1997

Moldova

24-Sep-1997

16-Jan-2007

Monaco

01-Oct-1996

18-Dec-1998

Mongolia

01-Oct-1996

08-Aug-1997

Montenegro

23-Oct-2006

23-Oct-2006

Morocco

24-Sep-1996

17-Apr-2000

Mozambique

26-Sep-1996

04-Nov-2008

Namibia

24-Sep-1996

29-Jun-2001

Nauru

08-Sep-2000

12-Nov-2001

Nepal**

08-Oct-1996

Netherlands*

24-Sep-1996

23-Mar-1999

New Zealand

27-Sep-1996

19-Mar-1999

Nicaragua

24-Sep-1996

05-Dec-2000

Niger

03-Oct-1996

09-Sep-2002

Nigeria

08-Sep-2000

27-Sep-2001

Niue**

09-Apr-2012

Norway*

24-Sep-1996

15-Jul-1999

North Korea* **

Oman

23-Sep-1999

13-Jun-2003

Pakistan* **

Palau

12-Aug-2003

01-Aug-2007

Panama

24-Sep-1996

23-Mar-1999

Papua New Guinea**

25-Sep-1996

Paraguay

25-Sep-1996

04-Oct-2001

Peru*

25-Sep-1996

12-Nov-1997

Philippines

24-Sep-1996

23-Feb-2001

Poland*

24-Sep-1996

25-May-1999

Portugal

24-Sep-1996

26-Jun-2000

Qatar

24-Sep-1996

03-Mar-1997

Romania*

24-Sep-1996

05-Oct-1999

Russian Federation*

24-Sep-1996

30-Jun-2000

Rwanda

30-Nov-2004

30-Nov-2004

Saint Kitts and Nevis

23-Mar-2004

27-Apr-2005

Saint Lucia

04-Oct-1996

05-Apr-2001

Saint Vincent

02-Jul-2009 23-Sep-2009

Samoa

09-Oct-1996

27-Sep-2002

San Marino

07-Oct-1996

12-Mar-2002

Sao Tome and Principe

26-Sep-1996

Saudi Arabia**

Senegal

26-Sep-1996

09-Jun-1999

Serbia

08-Jun-2001

19-May-2004

Seychelles

24-Sep-1996

13-Apr-2004

Sierra Leone

08-Sep-2000

17-Sep-2001

Singapore

14-Jan-1999

10-Nov-2001

Slovakia*

30-Sep-1996

03-Mar-1998

Slovenia

24-Sep-1996

31-Aug-1999

Solomon Islands**

03-Oct-1996

Somalia**

South Africa*

24-Sep-1996

30-Mar-1999

South Korea*

24-Sep-1996

24-Sep-1999

Spain*

24-Sep-1996

31-Jul-1998

Sri Lanka**

24-Oct-1996

Sudan

10-Jun-2004

10-Jun-2004

Suriname

14-Jan-1997

07-Feb-2006

Swaziland**

24-Sep-1996

Sweden*

24-Sep-1996

02-Dec-1998

Switzerland*

24-Sep-1996

01-Oct-1999

Syrian Arab Republic**

Tajikistan

07-Oct-1996

10-Jun-1998

Thailand**

12-Nov-1996

Macedonia

29-Oct-1998

14-Mar-2000

Timor-Leste**

26-Sep-2008

Togo

02-Oct-1996

02-Jul-2004

Tonga**

Trinidad and Tobago

08-Oct-2009 26-May-2010

Tunisia

16-Oct-1996

23-Sep-2004

Turkey*

24-Sep-1996

16-Feb-2000

Turkmenistan

24-Sep-1996

20-Feb-1998

Tuvalu**

Uganda

07-Nov-1996

14-Mar-2001

Ukraine*

27-Sep-1996

23-Feb-2001

United Arab Emirates

25-Sep-1996

18-Sep-2000

United Kingdom*

24-Sep-1996

06-Apr-1998

Tanzania

30-Sep-2004

30-Sep-2004

United States of America* **

24-Sep-1996

Uruguay

24-Sep-1996

21-Sep-2001

Uzbekistan

03-Oct-1996

29-May-1997

Vanuatu

24-Sep-1996

16-Sep-2005

Venezuela

03-Oct-1996

13-May-2002

Viet Nam*

24-Sep-1996

10-Mar-2006

Yemen**

30-Sep-1996

Zambia

03-Dec-1996

23-Feb-2006

Zimbabwe**

13-Oct-1999

[This is a mobile copy of Status of CTBT Signatures and Ratification]