Treaty

A treaty is a formal agreement between sovereign states or other groups recognized by international law, like international organizations. These agreements are governed by international rules and can be called many things, such as international agreements, protocols, conventions, pacts, or exchanges of letters. But only the ones that are legally binding count as treaties.

People have used international agreements for a very long time, even in ancient times. They became more common and complicated during the early modern era. In 1969, a big meeting created the Vienna Convention on the Law of Treaties, which set out clear rules for making, changing, understanding, and ending treaties.

Treaties can cover many important topics, like keeping peace, trading goods, protecting the environment, and supporting human rights. They can also create groups like the International Criminal Court and the United Nations to help manage these issues. Treaties are a main source of international law and have helped shape most of the rules that guide countries since the early 1900s. Every treaty must follow the rule that agreements must be kept, meaning countries promise to do what they say they will in good faith.

Modern usage and form

A treaty is a formal, written agreement that countries use to make promises to each other. It is usually signed after a special event that shows the countries agree to work together. Treaties have been used for a long time, but since the late 1800s, they have followed a similar pattern.

Most treaties start with a part called the preamble. This tells the names of the countries and leaders who are making the treaty and explains why they are working together. After the preamble, the main parts of the treaty begin, called articles. These articles explain what the countries have agreed to do. At the end of the treaty, there is usually a closing part that says where and when the treaty was signed, followed by the signatures of the leaders.

Bilateral and multilateral treaties

Bilateral treaties are agreements between two countries or groups. Sometimes, more than two countries can be part of a bilateral treaty if they are split into two groups with rights and duties between the groups.

A multilateral treaty is an agreement among many countries, where each country has rights and duties with every other country in the treaty. These treaties can be about regions or the whole world.

Role of the United Nations

The United Nations helps countries make big treaties that many nations agree to. Under the United Nations Charter, treaties must be registered with the UN to be used in the International Court of Justice. This helps make sure treaties are not kept secret, which can cause problems. After treaties are made, they go through special steps to become official, including signature, ratification, and entry into force.

Adding and amending treaty obligations

Reservations

Main article: Reservation (law)

Sometimes, a country may add conditions when agreeing to a treaty. These conditions are called reservations. They change what the country must do under the treaty. Reservations must be made when the country first agrees to the treaty, not later. At first, international law did not allow reservations unless every country agreed to them. Now, to get more countries to join treaties, reservations are usually allowed as long as they do not go against the main purpose of the treaty.

If a country makes a reservation, other countries can choose to accept it, object to it, or both. If they accept, both countries are not bound by the part of the treaty affected by the reservation when dealing with each other. If they object, that part of the treaty no longer applies between them. If they both object and oppose, the two countries have no treaty agreement at all.

Amendments

There are three ways to change an existing treaty. First, a formal amendment requires all parties to go through the whole agreement process again. This can take a long time, and not all original parties may join the amended treaty. When deciding what each country must do, they are only bound by the parts both agreed to. Treaties can also be changed informally by their governing body for small, procedural changes. Changes in how countries usually behave can also change what a treaty means. Small fixes to a treaty can be made by a procès-verbal, usually to correct clear mistakes in the treaty's text.

Protocols

See also: Environmental protocol

A protocol is a treaty that adds to or changes an earlier treaty. Countries that agreed to the first treaty do not have to agree to the protocol. For example, the United Nations Framework Convention on Climate Change set up general rules, and the Kyoto Protocol added specific rules later.

Execution and implementation

Treaties can start working as soon as a country agrees to them, meaning all their rules are active right away. But sometimes, a treaty needs extra rules from the country’s own laws to really work. For example, a treaty might need new laws so that certain crimes can be tried locally.

When it’s not clear what a treaty means, its words are explained carefully. Experts say that treaties should be understood in a fair way, using the normal meaning of the words and thinking about what the treaty is trying to achieve. No country can force its own meaning on others, but if all countries agree on a special meaning, it’s like adding a new rule to the treaty.

When countries sign a treaty, they are saying they will follow it and that the other country is also a proper, independent nation. Sometimes countries are careful about calling an agreement a “treaty” because it has special legal meaning.

If there is a disagreement about what a treaty means, special courts or groups can help decide. These might be set up just for that treaty or use existing courts like the International Court of Justice. The way problems are solved can depend on what the treaty says and might include penalties or other actions.

Ending treaty obligations

Treaties are not always permanent. Sometimes, countries can choose to stop following a treaty, but they usually need to follow specific steps to do so. For example, some treaties allow a country to leave if enough other countries also leave. Other treaties do not allow leaving at all.

If one country breaks the rules of a treaty badly, other countries can stop following it with that country for a while or even forever. Sometimes, a treaty ends on its own if certain conditions are met, like a set end date. A treaty can also end if situations change a lot in ways that were not expected when the treaty was made. However, a country cannot end a treaty just because it broke the rules itself.

Cartels

Cartels were special kinds of agreements used between countries from the 1600s to the 1800s. They helped countries work together on specific issues even when they were rivals in other areas. These agreements were usually handled by government workers.

In the United States, cartels helped with kind actions, like sending ships to carry messages or prisoners between fighting sides.

In Europe, cartels had many uses. They helped countries work together, even while still competing in some ways. For example, they agreed to send back people who had run away or broken laws, share prisoners of war fairly, keep postal and trade routes open, and work together against people who broke trade laws. These cartels were used until the 1800s, when the word "convention" started being used instead.

Invalid treaties

Sometimes, a treaty that seems valid might not actually be a binding agreement between countries. This can happen for a few reasons.

One reason is if a country was forced to agree to the treaty. For example, some treaties between Japan and Korea from many years ago were seen as unfair because Korea was pressured to agree.

A treaty can also be invalid if the person signing it did not have the right to do so according to their country's laws. Another reason is if there was a big mistake, trickery, or pressure when the treaty was made.

Finally, a treaty is not valid if it goes against very important rules that everyone agrees on, like those against hurting people unfairly or treating groups of people badly. These rules cannot be ignored, no matter what.

Treaties under domestic national law

Main article: Monism and dualism in international law

In different countries, the rules about how treaties work inside that country can vary a lot.

In Australia, the government can make treaties, but they are usually shared with parliament before being signed. These treaties become part of Australia’s laws only if parliament passes a law to support them. The Department of Foreign Affairs and Trade helps manage these treaties.

In Brazil, the president can make treaties, but they need approval from Congress first. After that, a special government announcement is needed to make the treaty part of Brazil’s laws. The highest court in Brazil has said that treaties about human rights are very important and stand above normal laws.

In India, making laws about treaties is up to the national parliament, no matter what the topic is.

In the United States, there are different kinds of international agreements. “Treaties” need approval from a special group of leaders called Senators. Other types of agreements need approval from just the president or from both parts of Congress. Sometimes, the president chooses the more formal “treaty” path to get support from Congress for important agreements.

Treaties and indigenous peoples

Treaties played a big role when Europeans explored and settled new lands. They often signed agreements with the local people, called indigenous peoples, to claim control. Sadly, many of these agreements were unfair to the native people, who sometimes did not fully understand what they were agreeing to.

In a few places, like Ethiopia and Qing China, local leaders used treaties to protect their lands better. They learned European ways and used treaties to stop powerful countries from taking too much control.

In countries like New Zealand and Canada, treaties helped local groups keep some of their independence. Today, these treaties are very important in discussions about politics and rights.

Australia

Main article: Indigenous treaties in Australia

For Indigenous Australians, no official treaty was ever made giving Europeans the right to the land. Instead, a idea called terra nullius was used, meaning the land belonged to no one before Europeans arrived. Later, this idea was changed by Mabo v Queensland, which allowed for recognizing native title in Australia.

Victoria

On 10 December 2019, the Victorian First Peoples' Assembly met for the first time in the Upper House of the Parliament of Victoria in Melbourne. The Assembly’s goal is to create rules for making treaties between the Victorian Government and Aboriginal Victorian peoples. It will also set up a Treaty Authority to watch over these talks and make sure they are fair.

United States

Before 1871, the United States made many treaties with Native American tribes. But on 3 March 1871, a law was passed that stopped making these treaties. After that, the government used other ways to make agreements with tribes instead of formal treaties.

Canada

When Europeans settled in Canada, they signed many treaties with Indigenous First Nations peoples. These treaties can be grouped into three types: commercial, alliance, and territorial. Commercial treaties started in the 1600s for trading furs. Alliance treaties came later, and territorial treaties about land rights were signed between 1760 and 1923. Many of these treaties are still recognized today by the Government of Canada.

Treaty perceptions

Indigenous peoples and Europeans had very different ideas about what treaties meant. For Indigenous groups, treaties were about keeping good relationships and sharing the land fairly. One example is Gdoo-naaganinaa, or Our Dish, where nations agreed to share the land without taking it all for themselves. Europeans often saw treaties as legal contracts that they did not always follow. Over time, the European view became more common in Canada.

Treaties today

Canada now has 25 Modern Treaties with 97 Indigenous groups, representing over 89,000 people. These treaties help protect Indigenous rights by giving them control over large areas of land, money, and ways to manage their lands and resources. They also help protect traditional ways of life and give Indigenous groups a say in decisions about their lands.