The International Court of Justice (ICJ) is the principal judicial organ of the United Nations. It is responsible for settling legal disputes between states and for giving advisory opinions on legal questions referred to it by authorized United Nations organs and specialized agencies.

Treaties and conventions are the primary source of international law. They are written agreements between states that create legally binding obligations.

The principle of non-aggression prohibits states from using force or the threat of force against other states. It is a fundamental principle of international law that is enshrined in the United Nations Charter.

The process of appealing a decision of an international court or tribunal is called an appeal. An appeal is a request to a higher court or tribunal to review a decision of a lower court or tribunal.

The International Criminal Court (ICC) is an international court that is responsible for prosecuting individuals accused of genocide, crimes against humanity, and war crimes.

The principle of pacta sunt servanda requires states to fulfill their treaty obligations in good faith. It is a fundamental principle of international law that is enshrined in the Vienna Convention on the Law of Treaties.

The International Tribunal for the Law of the Sea (ITLOS) is an international tribunal that is responsible for resolving disputes relating to the interpretation and application of the United Nations Convention on the Law of the Sea.

The principle of rebus sic stantibus allows a state to terminate a treaty if there has been a fundamental change of circumstances. It is a principle of international law that is recognized by the Vienna Convention on the Law of Treaties.

The International Centre for Settlement of Investment Disputes (ICSID) is an international court that is responsible for resolving disputes between states and private individuals or corporations.

The principle of uti possidetis prohibits states from acquiring territory by force. It is a principle of international law that is recognized by the United Nations Charter.

The European Court of Human Rights (ECHR) is an international court that is responsible for resolving disputes between states and individuals.

The principle of sovereign equality requires states to respect the sovereignty of other states. It is a fundamental principle of international law that is enshrined in the United Nations Charter.

The United Nations Administrative Tribunal (UNAT) is an international court that is responsible for resolving disputes between states and international organizations.

The principle of non-intervention prohibits states from intervening in the internal affairs of other states. It is a fundamental principle of international law that is enshrined in the United Nations Charter.

The International Centre for Settlement of Investment Disputes (ICSID) is an international court that is responsible for resolving disputes between states and foreign investors.