The declaration on principles of International Law concerning friendly relations and cooperation among states in accordance with the Charter of the United Nations (October 24, 1970) provided that: States shall refrain in their international relations from the threat with force or use of force against the territorial integrity or political independence of any state, or in any other manner inconsistent with the purposes of the United Nations.

States shall resolve their international disputes by peaceful means in such a way as not to endanger international peace, security and justice. States are bound by the Charter not to interfere in matters within the domestic jurisdiction of any state. States are obliged to cooperate with each other in accordance with the UN Charter.

By virtue of the principle of equal rights and self-determination of peoples, envisaged in the charter, all peoples have the right to freely determine their political status and pursue their economic, social and cultural development without outside interference, and every state is obliged to respect this right in accordance with the provisions of the charter. All states enjoy sovereign equality, they have the same rights and obligations and are full-fledged members of international society, regardless of differences of an economic, social, political or other nature. Each state is obliged to fulfill in good faith the obligations assumed by it in accordance with the UN Charter, arising from the generally recognized principles and norms of international law, as well as arising from international treaties valid in accordance with the generally recognized principles and norms of international law. All the above-mentioned principles have been repeatedly confirmed in other declarations and other foundational documents contained in the resolutions of the UN General Assembly. Herewith, it was found that, in interpretation and application, the above-mentioned principles are interrelated and each principle must be considered in the context of all other principles.

The norms of international law define the basic concepts and institutions of international relations, as well as the related rights and obligations of states and international organizations. They contain the definition of the state, its sovereignty, territory, population, and the concept of legal succession of states, their international legal responsibility as a subject of international law. These norms also define the institutions of an international treaty, negotiations, intermediation, international conflicts, peaceful settlement of disputes, representing the methods of implementation of relations between states.

As noted above, there are branches in the system of norms of international law, in which norms related to certain areas of international regulation are grouped.

Diplomatic and consular law regulates the representational relations of states and the rules for servicing citizens and trade and economic organizations abroad.

In the field of international security and disarmament, the norms of international law determine the order and guarantees for the maintenance of international peace.

Maritime law regularizes the regime of maritime spaces and their use.

Law of the air defines the rights and obligations of states in connection with air communication.

Law of outer space determines the probing procedure and exploitation of outer space.

International humanitarian law consolidates and promotes the development of human rights.

A separate branch is made up of norms that determine the order for economic and scientific and technical cooperation between states, international legal protection of the ambient environment, etc.