The use of force under United Nations system

This thesis deals with the concept of use of force under UN system. It discusses the meaning of war in general, concentration on the principle of prohibition of use of force. In this respect, the study deals with all ٨ aspects of such principle, including its history and evolution. There are three main stages in the evolution ofsuch principle. The first is the prohibition of use of force immediately after the First World War, specifically when the Covenant of the League of Nations was first concluded. The second is the prohibition of use of force at the time of concluding the Paris Pact. The third is the prohibition of use of force when the UN Charter was concluded, i.e. the period subsequent to the Second World War. The study therefore analyzes Article 2(4) of the UN Charter which includes this principle. The thesis has also emphasize the right of individual and collective self-defence, as an exception to the principle of the prohibition of use of force, through discussing Article 51 of the UN Charter that contains this right, and the relation between Articleand Article 2(4). Other exceptions that are considered as weak justifications presented by some states to legalize their aggressive actions are included as well. Finally, the study has examined the use of force by the UN forces, focusing on the collective security system in general and the collective measures taken by some bodies suchas the Security Council and the General Assembly to realize the international peace and security. The forces affiliated to the UN are also fully discussed. The conclusions of the study include the results and the recommendations