Basic principles of international law?

The sovereign equality of Member States.

Sincerely fulfill the obligations of the Charter.

Peaceful settlement of international disputes.

Do not use force.

Collective cooperation.

Ensure that non-member States abide by the principles of the Charter.

The principle of non-interference in other countries' internal affairs.

Legal basis:

Charter of the United Nations

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In order to achieve the purpose stated in article 1, the organization and its member States shall abide by the following principles:

1. The organization is based on the principle of sovereign equality of all Member States.

2. All Member States should fulfill their obligations under this Charter in good faith to ensure the rights and interests of all Member States arising from their accession to the Organization.

3. Member States should settle international disputes through peaceful means so as not to endanger international peace, security and justice.

4. In international relations, Member States shall not use threat or force, or violate the territorial integrity or political independence of any Member State or country in any other way inconsistent with the purposes of the United Nations.

5. Member States should do their best to assist the United Nations in its actions in accordance with the provisions of the Charter. Member States must not assist any country when the United Nations takes preventive or enforcement actions.

6. To the extent necessary for the maintenance of international peace and security, the Organization should ensure that non-United Nations Member States abide by the above principles.

7. The Charter shall not authorize the United Nations to intervene in matters that are essentially within the domestic jurisdiction of any country, nor shall it require Member States to submit the matter to a resolution in accordance with the Charter; However, this principle does not prevent the application of enforcement measures in Chapter VII.

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The basic principles of international law refer to those legal principles that are recognized by all countries, have universal significance, apply to all effective scopes of international law and form the basis of international law.

Because international law is a law between countries, it is impossible for a country to create international law, although sometimes the principles put forward by one country or a few countries have great political and legal significance and must be recognized by all countries to become the basic principles of international law. The basic principles must be recognized by all countries.

The Charter of the United Nations has a decisive influence on the formation and development of the basic principles of modern international law. The Charter of the United Nations is essentially a multilateral international treaty, and the principles it contains form the basis of the basic principles of international law.

References:

Charter of the United Nations