A treaty is a formal, legally binding written agreement concluded by sovereign states in international law. International organizations can also be party to an international treaty. A treaty is binding under international law.
The Vienna Convention on the Law of Treaties (VCLT) is an international agreement that regulates treaties among sovereign states.
The Pacific Islands Forum (PIF) is an inter-governmental organisation that aims to enhance cooperation among countries and territories of Oceania, including formation of a trade bloc and regional peacekeeping operations. It was founded in 1971 as the South Pacific Forum (SPF), and changed its name in 1999 to "Pacific Islands Forum", so as to be more inclusive of the Forum's Oceania-spanning membership of both north and south Pacific island countries, including Australia.
A memorandum of understanding (MoU) is a type of agreement between two (bilateral) or more (multilateral) parties. It expresses a convergence of will between the parties, indicating an intended common line of action. It is often used either in cases where parties do not imply a legal commitment or in situations where the parties cannot create a legally enforceable agreement. It is a more formal alternative to a gentlemen's agreement.
The Treaty of Rarotonga is the common name for the South Pacific Nuclear Free Zone Treaty, which formalises a nuclear-weapon-free zone in the South Pacific. The treaty bans the use, testing, and possession of nuclear weapons within the borders of the zone.
The Cook Islands maintains diplomatic relations with various countries and is a member of multilateral organisations. While the country is in free association with New Zealand, which can act on the Cook Islands' "delegated authority [...] to assist the Cooks Islands" in foreign affairs, the Cook Islands nevertheless enters into treaty obligations and otherwise "interacts with the international community as a sovereign and independent state."
A bilateral treaty is a treaty strictly between two state entities. It is an agreement made by negotiations between two parties, established in writing and signed by representatives of the parties. Treaties can span in substance and complexity, regarding a wide variety of matters, such as territorial boundaries, trade and commerce, political alliances, and more. The agreement is usually then ratified by the lawmaking authority of each party or organization. Any agreement with more than two parties is a multilateral treaty. Similar to a contract, it is also called a contractual treaty. As with any other treaty, it is a written agreement that is typically formal and binding in nature.
The Vienna Convention for the Protection of the Ozone Layer is a multilateral environmental agreement signed in 1985 that provided frameworks for international reductions in the production of chlorofluorocarbons due to their contribution to the destruction of the ozone layer, resulting in an increased threat of skin cancer.
Tuvalu – United States relations are bilateral relations between Tuvalu and the United States.
The 1995 Waigani Convention is a treaty that bans the exporting of hazardous or radioactive waste to Pacific Islands Forum countries, and prohibits Forum island countries from importing such waste. The convention has been ratified by Australia, Cook Islands, Fiji, Kiribati, Federated States of Micronesia, New Zealand, Niue, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu, and Vanuatu. It entered into force in 2001.
The Anti-Counterfeiting Trade Agreement (ACTA) is a multilateral treaty for the purpose of establishing international standards for intellectual property rights enforcement that did not enter into force. The agreement aims to establish an international legal framework for targeting counterfeit goods, generic medicines and copyright infringement on the Internet, and would create a new governing body outside existing forums, such as the World Trade Organization, the World Intellectual Property Organization, and the United Nations.
China-Niuean relations are relations between China and Niue.
The Western and Central Pacific Fisheries Commission (WCPFC) is a regional fisheries management organisation established to conserve and manage tuna and other highly migratory fish stocks across the western and central areas of the Pacific Ocean. Its full name is Commission for the Conservation and Management of Highly Migratory Fish Stocks in the Western and Central Pacific Ocean. It commenced operations in late 2005, and its secretariat is based in Pohnpei, in the northern Pacific state of the Federated States of Micronesia.
The Nauru Agreement Concerning Cooperation in the Management of Fisheries of Common Interest, or The Nauru Agreement is an Oceania subregional agreement between the Federated States of Micronesia, Kiribati, the Marshall Islands, Nauru, Palau, Papua New Guinea, Solomon Islands and Tuvalu. The eight signatories collectively control 25–30% of the world's tuna supply and approximately 60% of the western and central Pacific tuna supply.
The Pacific Islands Forum Fisheries Agency (FFA) is an intergovernmental agency established in 1979 to facilitate regional co-operation and co-ordination on fisheries policies between its member states in order to achieve conservation and optimum utilisation of living marine resources, in particular highly migratory fish stocks, for the benefit of the peoples of the region, in particular the developing countries. The office campus is located in Honiara, Solomon Islands
The Hague Hijacking Convention is a multilateral treaty by which states agree to prohibit and punish aircraft hijacking. The convention does not apply to customs, law enforcement or military aircraft, thus it applies exclusively to civilian aircraft. The convention only addresses situations in which an aircraft takes off or lands in a place different from its country of registration. The convention sets out the principle of aut dedere aut judicare—that a party to the treaty must prosecute an aircraft hijacker if no other state requests his or her extradition for prosecution of the same crime.
The Convention for the Suppression of Unlawful Acts against the Safety of Civil Aviation is a multilateral treaty by which states agree to prohibit and punish behaviour which may threaten the safety of civil aviation.
The Wellington Convention is a 1989 multilateral treaty whereby states agreed to prohibit the use of fishing driftnets longer than 2.5 kilometres in the South Pacific. The Wellington Convention played a role in the 1991 United Nations General Assembly's resolution calling for a global moratorium of driftnet fishing on the high seas.
The South Pacific Tuna Treaty is a fisheries treaty agreement between the United States and 16 Pacific Island countries. The treaty entered into force in 1988, was extended in 1993, 2002, 2016, and again in 2024, currently lasting until 2033, unless otherwise extended. It allows for United States fishing vessels to fish in the exclusive economic zones of the other party states.
Australia 
Cook Islands 
Fiji 
Kiribati 
Marshall Islands 
Micronesia, Federated States of 
Nauru 
New Zealand 
Niue 
Palau 
Papua New Guinea 
Samoa 
Solomon Islands 
Tokelau 
Tonga 
Tuvalu 
Vanuatu