Article 51

Chapter VII of the United Nations Charter sets out the UN Security Council's powers to maintain peace. It allows the Council to "determine the existence of any threat to the peace, breach of the peace, or act of aggression" and to take military and nonmilitary action to "restore international peace and security".

Chapter VII also gives the Military Staff Committee responsibility for strategic coordination of forces placed at the disposal of the UN Security Council. It is made up of the chiefs of staff of the five permanent members of the Council.

The UN Charter's prohibition of member states of the UN attacking other UN member states is central to the purpose for which the UN was founded in the wake of the destruction of World War II: to prevent war. This overriding concern is also reflected in the Nuremberg Trials' concept of a crime against peace "starting or waging a war against the territorial integrity, political independence or sovereignty of a state, or in violation of international treaties or agreements..." (crime against peace), which was held to be the crime that makes all war crimes possible.

The United Nations was established after World War II and the ultimate failure of diplomacy despite the existence of the League of Nations in the years between the First and Second World War. The Security Council was thus granted broad powers through Chapter VII as a reaction to the failure of the League. These broad powers allow it to enjoy greater power than any other international organization in history. It can be argued that the strong executive powers granted to it give it the role of 'executive of the international community' or even of an 'international government'.

The covenant of the League of Nations provided, for the first time in history, enforcement of international responsibilities (i.e. adhering to the Covenant of the League of Nations) through economic and military sanctions. Member states were also obliged, even without prior decision by the council to take action against states that acted unlawfully in the eyes of the League's Covenant. This meant that the peace process was largely dependent on the willingness of member states, because the Covenant of the League of Nations did not provide binding decisions; The Council of the League was only responsible for recommending military force. As well as this, Article 11 paragraph 1 of the Covenant states:

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