The role of The United Nations in international humanitarian intervention

War between people has been the biggest problem in the world since the beginning of history. After the First World War and the Second World War which are known as the two greatest wars in history, states came together in the international arena and formed the League of Nations and the United Nations respectively. These institutions was established with the main mission of preventing new wars that might occur in the world. As a result of the reflections of scientific progress on the war technologies; as in the case of Nagasaki and Hiroshima, war has became widespread, destructive and had life-threatening effects. Moreover, it has reached the point where it could spread very rapidly to the whole world as a result of the devolopments achieved in information, communication and transportation, technologies. The United Nations aims to prevent these wars, the advancement and spread of these wars, also to prevent people from being affected by wars and to prevent human rights violations and humanitarian crises, to protect of world peace and security, through humanitarian intervention. In this thesis, the concept of Humanitarian Intervention, the international dimension of this concept and the role of the United Nations in International Humanitarian Intervention have been tried to be explained with examples from past to present, "The prohibition of using force, exceptions of this prohibition, the prohibition of Violation of States' Right to Sovereignty and Responsibility for Protection" concepts have been examined together with their basis in international law.