Country Profiles

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

Y

Z

Country

Tonga

|

Annex 2 State*

No

|

Signature Date

2026-07-07

|

Ratification Date

2026-07-07

|

Additional Information

Tonga was the 179th State to ratify the CTBT, see CTBTO press release.

A

Afghanistan

Albania

Algeria

Andorra

Angola

Antigua and Barbuda

Argentina

Armenia

Australia

Austria

Azerbaijan

B

Bahrain

Bangladesh

Barbados

Belarus

Belgium

Belize

Benin

Bhutan

Bolivia (Plurinational State of)

Bosnia and Herzegovina

Botswana

Brazil

Brunei Darussalam

Bulgaria

Burkina Faso

Burundi

C

Cabo Verde

Cambodia

Cameroon

Canada

Central African Republic

Chad

Chile

China

Colombia

Comoros

Congo

Cook Islands

Costa Rica

Côte d'Ivoire

Croatia

Cuba

Cyprus

Czech Republic

D

Democratic People's Republic of Korea

Democratic Republic of the Congo

Denmark

Djibouti

Dominica

Dominican Republic

E

Ecuador

Egypt

El Salvador

Equatorial Guinea

Eritrea

Estonia

Eswatini

Ethiopia

F

Fiji

Finland

France

G

Gabon

Georgia

Germany

Ghana

Greece

Grenada

Guatemala

Guinea

Guinea-Bissau

Guyana

H

Haiti

Holy See

Honduras

Hungary

I

Iceland

India

Indonesia

Iran (Islamic Republic of)

Iraq

Ireland

Israel

Italy

J

Jamaica

Japan

Jordan

K

Kazakhstan

Kenya

Kiribati

Kuwait

Kyrgyzstan

L

Lao People's Democratic Republic

Latvia

Lebanon

Lesotho

Liberia

Libya

Liechtenstein

Lithuania

Luxembourg

M

Madagascar

Malawi

Malaysia

Maldives

Mali

Malta

Marshall Islands

Mauritania

Mauritius

Mexico

Micronesia, Federated States of

Monaco

Mongolia

Montenegro

Morocco

Mozambique

Myanmar

N

Namibia

Nauru

Nepal

Netherlands (Kingdom of the)

New Zealand

Nicaragua

Niger

Nigeria

Niue

North Macedonia

Norway

O

Oman

P

Pakistan

Palau

Panama

Papua New Guinea

Paraguay

Peru

Philippines

Poland

Portugal

Q

Qatar

R

Republic of Korea

Republic of Moldova

Romania

Russian Federation

Rwanda

S

Saint Kitts and Nevis

Saint Lucia

Saint Vincent and the Grenadines

Samoa

San Marino

Sao Tome and Principe

Saudi Arabia

Senegal

Serbia

Seychelles

Sierra Leone

Singapore

Slovakia

Slovenia

Solomon Islands

Somalia

South Africa

South Sudan

Spain

Sri Lanka

Sudan

Suriname

Sweden

Switzerland

Syrian Arab Republic

T

Tajikistan

Thailand

The Bahamas

The Gambia

Timor-Leste

Togo

Tonga

Trinidad and Tobago

Tunisia

Türkiye

Turkmenistan

Tuvalu

U

Uganda

Ukraine

United Arab Emirates

United Kingdom of Great Britain and Northern Ireland

United Republic of Tanzania

United States of America

Uruguay

Uzbekistan

V

Vanuatu

Venezuela (Bolivarian Republic of)

Viet Nam

Y

Yemen

Z

Zambia

Zimbabwe