1. Chapter VII
Article 2.4 All Members shall refrain in their international relations from the threat 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.

2. Chapter VII General principles:
only the SC can use the force legitimately (collective security);
gradualism of measures;
power to enact binding measures;
no application of the principle of non-interference in domestic affairs.

3. Chapter VII
Article 39 The Security Council shall determine the existence of any threat to the peace, breach of the peace, or act of aggression and shall make recommendations, or decide what measures shall be taken in accordance with Articles 41 and 42, to maintain or restore international peace and security.

4. Chapter VII Situations allowing the use of Chapter VII:
threat to the peace;
breach of the peace;
act of aggression.

5. Chapter VII
Resolution adopted by the General Assembly 3314 (XXIX). Definition of Aggression Article 1: Aggression is the use of armed force by a State against the sovereignty, territorial integrity or political independence of another State, or in any other manner inconsistent with the Charter of the United Nations, as set out in this Definition.

6. Chapter VII
Examples of acts of aggression: (a) The invasion or attack by the armed forces of a State of the territory of another State, or any military occupation; (b) Bombardment by the armed forces of a State against the territory of another State or the use of any weapons by a State against the territory of another State; (c) The blockade of the ports or coasts of a State by the armed forces of another State;

7. Chapter VI
(d) An attack by the armed forces of a State on the land, sea or air forces, or marine and air fleets of another State; (e) The use of armed forces of one State which are within the territory of another State with the agreement of the receiving State, in contravention of the conditions; (f) The action of a State in allowing its temtory, which it has placed at the disposal of another State, to be used by that other State for perpetrating an act of aggression against a third State;

8. Chapter VII
(g) The sending by or on behalf of a State of armed bands, groups, irregulars or mercenaries, which carry out acts of armed force against another State of such gravity as to amount to the acts listed above, or its substantial involvement therein.

9. Chapter VII
Article 39 The Security Council shall determine the existence of any threat to the peace, breach of the peace, or act of aggression and shall make recommendations, or decide what measures shall be taken in accordance with Articles 41 and 42, to maintain or restore international peace and security.

10. Chapter VII
Article 40 In order to prevent an aggravation of the situation, the SC may, before making the recommendations or deciding upon the measures provided for in Article 39, call upon the parties concerned to comply with such provisional measures as it deems necessary or desirable. Such provisional measures shall be without prejudice to the rights, claims, or position of the parties concerned. The SC shall duly take account of failure to comply with such provisional measures.

11. Chapter VII
Article 41 The Security Council may decide what measures not involving the use of armed force are to be employed to give effect to its decisions, and it may call upon the Members of the United Nations to apply such measures. These may include complete or partial interruption of economic relations and of rail, sea, air, postal, telegraphic, radio, and other means of communication, and the severance of diplomatic relations.