Which principle of the United Nations is correctly stated here?

Concept

The UN Charter separates the Organization’s purposes from the principles that guide how the UN and its members act. Article 2 applies these principles to all members, including sovereign equality, good-faith fulfilment of obligations, peaceful settlement of disputes, restraint from force, and non-intervention in domestic jurisdiction.

Application

The statement that all member states are equal in sovereignty reproduces the substance of Article 2(1): the United Nations is based on the sovereign equality of all its members. It applies to every member state, not only to permanent members of the Security Council.

Contrast

• The claim of free intervention even outside Chapter VII reverses Article 2(7): that provision protects matters essentially within domestic jurisdiction and carves out only Chapter VII enforcement measures.

• Using force because of disagreement with a Security Council decision conflicts with Article 2(4), which requires members to refrain from threats or force inconsistent with UN purposes.

• Limiting Charter obedience to permanent Security Council members conflicts with Article 2(2), which places good-faith Charter obligations on all members.

• Sovereign equality applies across the full UN membership under Article 2(1).

Cross-check

Matching each statement to Article 2 shows that the domestic-affairs, use-of-force, and permanent-member claims reverse or improperly narrow their respective rules. The sovereign-equality statement preserves both the rule and its universal scope.

Therefore, the correctly stated principle is: All member states are equal in sovereignty under the UN Charter.