The Treaty of Rarotonga is the common name for the South Pacific Nuclear Free Zone Treaty, which formalises a

nuclear-weapon-free zone A nuclear-weapon-free zone (NWFZ) is defined by the United Nations as an agreement that a group of states has freely established by treaty or convention that bans the development, manufacturing, control, possession, testing, stationing or transpo ...

in the South Pacific. The treaty bans the use, testing, and possession of

nuclear weapon A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission or atomic bomb) or a combination of fission and fusion reactions (thermonuclear weapon), producing a nuclear exp ...

s within the borders of the zone. It was signed by the South Pacific nations of

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

, the

Cook Islands The Cook Islands is an island country in Polynesia, part of Oceania in the South Pacific Ocean. It consists of 15 islands whose total land area is approximately . The Cook Islands' Exclusive Economic Zone (EEZ) covers of ocean. Avarua is its ...

Fiji Fiji, officially the Republic of Fiji, is an island country in Melanesia, part of Oceania in the South Pacific Ocean. It lies about north-northeast of New Zealand. Fiji consists of an archipelago of more than 330 islands—of which about ...

Kiribati Kiribati, officially the Republic of Kiribati, is an island country in the Micronesia subregion of Oceania in the central Pacific Ocean. Its permanent population is over 119,000 as of the 2020 census, and more than half live on Tarawa. The st ...

Nauru Nauru, officially the Republic of Nauru, formerly known as Pleasant Island, is an island country and microstate in the South Pacific Ocean. It lies within the Micronesia subregion of Oceania, with its nearest neighbour being Banaba (part of ...

New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...

Niue Niue is a self-governing island country in free association with New Zealand. It is situated in the South Pacific Ocean and is part of Polynesia, and predominantly inhabited by Polynesians. One of the world's largest coral islands, Niue is c ...

Papua New Guinea Papua New Guinea, officially the Independent State of Papua New Guinea, is an island country in Oceania that comprises the eastern half of the island of New Guinea and offshore islands in Melanesia, a region of the southwestern Pacific Ocean n ...

Samoa Samoa, officially the Independent State of Samoa and known until 1997 as Western Samoa, is an island country in Polynesia, part of Oceania, in the South Pacific Ocean. It consists of two main islands (Savai'i and Upolu), two smaller, inhabited ...

Solomon Islands Solomon Islands, also known simply as the Solomons,John Prados, ''Islands of Destiny'', Dutton Caliber, 2012, p,20 and passim is an island country consisting of six major islands and over 1000 smaller islands in Melanesia, part of Oceania, t ...

Tonga Tonga, officially the Kingdom of Tonga, is an island country in Polynesia, part of Oceania. The country has 171 islands, of which 45 are inhabited. Its total surface area is about , scattered over in the southern Pacific Ocean. accordin ...

Tuvalu Tuvalu ( ) is an island country in the Polynesian subregion of Oceania in the Pacific Ocean, about midway between Hawaii and Australia. It lies east-northeast of the Santa Cruz Islands (which belong to the Solomon Islands), northeast of Van ...

, and

Vanuatu Vanuatu ( or ; ), officially the Republic of Vanuatu (; ), is an island country in Melanesia located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is east of northern Australia, northeast of New Caledonia, east o ...

on the island of

Rarotonga Rarotonga is the largest and most populous of the Cook Islands. The island is volcanic, with an area of , and is home to almost 75% of the country's population, with 10,898 of a total population of 15,040. The Parliament of the Cook Islands, Coo ...

(where the capital of the Cook Islands is located) on 6 August 1985, came into force on 11 December 1986 with the 8th ratification, and has since been ratified by all of those states. The Marshall Islands signed the treaty on March 1, 2025. The

Federated States of Micronesia The Federated States of Micronesia (, abbreviated FSM), or simply Micronesia, is an island country in Micronesia, a region of Oceania. The federation encompasses the majority of the Caroline Islands (excluding Palau) and consists of four Admin ...

, and

Palau Palau, officially the Republic of Palau, is an island country in the Micronesia subregion of Oceania in the western Pacific Ocean. The Republic of Palau consists of approximately 340 islands and is the western part of the Caroline Islands ...

are not party to the treaties but are eligible to become parties should they decide to join the treaty in the future.

Protocols binding other states

There are three protocols to the treaty, which have been signed by the five declared nuclear states, with the exception of Protocol 1 for China and Russia who have no territory in the Zone. #no manufacture, stationing or testing in their territories within the Zone #no use against the Parties to the Treaty, or against territories where Protocol 1 is in force #no testing within the Zone In 1996 France and the United Kingdom signed and ratified the three protocols. The United States signed them the same year but has not ratified them. China signed and ratified protocols 2 and 3 in 1987. Russia has also ratified protocols 2 and 3 with reservations.

Scope of applicability

The treaty's different provisions apply variously to the Zone, to the territories within the Zone, or globally. "South Pacific Nuclear Free Zone" means the area : *south of the

Equator The equator is the circle of latitude that divides Earth into the Northern Hemisphere, Northern and Southern Hemisphere, Southern Hemispheres of Earth, hemispheres. It is an imaginary line located at 0 degrees latitude, about in circumferen ...

*north of the

60th parallel south The 60th parallel south is a circle of latitude that is 60 degrees south of Earth's equatorial plane. No land lies on the parallel—it crosses nothing but ocean. The closest land is a group of rocks north of Coronation Island (Melson Rocks o ...

(the northern limit of the

Antarctic Treaty The Antarctic (, ; commonly ) is the polar region of Earth that surrounds the South Pole, lying within the Antarctic Circle. It is diametrically opposite of the Arctic region around the North Pole. The Antarctic comprises the continent of A ...

zone) *east of the 115th meridian east *west of the 115th meridian west (the western limit of the Treaty of Tlatelolco Latin American Nuclear-Weapon-Free Zone) plus three projections north of the Equator to include the territory and territorial waters of

, and

, but minus the northwest corner beyond Australian territorial waters and near

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

(and the Southeast Asian Nuclear-Weapon-Free Zone). Several islands in the Indian Ocean also belong to Australia and are therefore part of the zone. "Territory" means

internal waters According to the United Nations Convention on the Law of the Sea, a nation's internal waters include waters on the side of the baseline of a nation's territorial waters that is facing toward the land, except in archipelagic states. It includes wa ...

, territorial sea and

archipelagic waters An archipelagic state is an island country that consists of one or more archipelagos. The designation is legally defined by the United Nations Convention on the Law of the Sea of 1982 ( UNCLOS III). The Bahamas, Fiji, Indonesia, Papua New Guinea, ...

, the

seabed The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as seabeds. The structure of the seabed of the global ocean is governed by plate tectonics. Most of ...

and

subsoil Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus. The su ...

beneath, the land territory and the airspace above them. It does not include

international waters The terms international waters or transboundary waters apply where any of the following types of bodies of water (or their drainage basins) transcend international boundaries: oceans, large marine ecosystems, enclosed or semi-enclosed region ...

. Article 2 says "Nothing in this Treaty shall prejudice or in any way affect the rights, or the exercise of the rights, of any State under

international law International law, also known as public international law and the law of nations, is the set of Rule of law, rules, norms, Customary law, legal customs and standards that State (polity), states and other actors feel an obligation to, and generall ...

with regard to

freedom of the seas Freedom of the seas is a principle in the law of the sea. It stresses freedom to navigate the oceans. It also disapproves of war fought in water. The freedom is to be breached only in a necessary international agreement. This principle was on ...

." The treaty is an agreement between

nation-state A nation state, or nation-state, is a political entity in which the state (a centralized political organization ruling over a population within a territory) and the nation (a community based on a common identity) are (broadly or ideally) con ...

s and as such of course cannot apply to those who have not signed the treaty or protocols, for example, the four countries not signatories to the

Non-Proliferation Treaty The Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT, is an international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperatio ...

List of parties and territories

Micronesia Micronesia (, ) is a subregion of Oceania, consisting of approximately 2,000 small islands in the Northwestern Pacific Ocean. It has a close shared cultural history with three other island regions: Maritime Southeast Asia to the west, Poly ...

is outside the Zone except for parts of

and the Marshall Islands (once it ratifies). *

Melanesia Melanesia (, ) is a subregion of Oceania in the southwestern Pacific Ocean. It extends from New Guinea in the west to the Fiji Islands in the east, and includes the Arafura Sea. The region includes the four independent countries of Fiji, Vanu ...

is inside the Zone except for

Western New Guinea Western New Guinea, also known as Papua, Indonesian New Guinea, and Indonesian Papua, is the western half of the island of New Guinea, formerly Dutch and granted to Indonesia in 1962. Given the island is alternatively named Papua, the region ...

(a part of

), which is in the Southeast Asian Nuclear-Weapon-Free Zone. *

Polynesia Polynesia ( , ) is a subregion of Oceania, made up of more than 1,000 islands scattered over the central and southern Pacific Ocean. The indigenous people who inhabit the islands of Polynesia are called Polynesians. They have many things in ...

is inside the Zone except for

Easter Island Easter Island (, ; , ) is an island and special territory of Chile in the southeastern Pacific Ocean, at the southeasternmost point of the Polynesian Triangle in Oceania. The island is renowned for its nearly 1,000 extant monumental statues, ...

, which is in the Latin American Nuclear-Weapon-Free Zone, the

Polynesian outliers Polynesian is the adjectival form of Polynesia. It may refer to: * Polynesians, an ethnic group * Polynesian culture, the culture of the indigenous peoples of Polynesia * Polynesian mythology, the oral traditions of the people of Polynesia * Polyn ...

Kapingamarangi Kapingamarangi is an atoll and a municipality in the state of Pohnpei of the Federated States of Micronesia. It is by far the most southerly atoll or island of the country and the Caroline Islands, south of the next southerly atoll, Nukuoro, an ...

and Nukuoro in Micronesia, Hawaii,

American Samoa American Samoa is an Territories of the United States, unincorporated and unorganized territory of the United States located in the Polynesia region of the Pacific Ocean, South Pacific Ocean. Centered on , it is southeast of the island count ...

and several uninhabited

United States Minor Outlying Islands The United States Minor Outlying Islands is a statistical designation applying to the minor outlying islands and groups of islands that comprise eight United States insular areas in the Pacific Ocean (Baker Island, Howland Island, Jarvis Isla ...

Carrying of nuclear weapons within the zone

U.S. bomber aircraft have been visiting Australia since the early 1980s, and nuclear-capable B-52s and B-2s operate regularly out of northern Australia. When U.S. bombers visit Australia, the U.S. government does not tell the Australian government whether the aircraft are carrying nuclear weapons. In 2023, the Australian Foreign Minister Penny Wong said the Australian Government "understand and respect the longstanding US policy of neither confirming or denying".

References

External links

Text of the treaty
– FAS
Ratification status

Map of the Zone area (poor quality)
{{DEFAULTSORT:Rarotonga Treaty Treaties of Australia Treaties of the Cook Islands Treaties of Fiji Treaties of Kiribati Treaties of Nauru Treaties of New Zealand Treaties of Niue Treaties of Papua New Guinea Treaties of the Solomon Islands Treaties of Tonga Treaties of Tuvalu Treaties of Samoa Treaties of Vanuatu New Zealand–Pacific relations Treaties establishing nuclear-weapon-free zones Treaties concluded in 1985 1985 in the Cook Islands Treaties entered into force in 1986 Nuclear weapons governance Rarotonga Pacific Islands Forum treaties