Abstract This project analyses the role that the UN Security Council played in the Iraqi war in 2003. We perceive a problem in the UN council and its organs and their mission on Iraq war 2003. This is because the misconception of UN and its councils on Iraq’s weapon of mass destruction (WMD) has led to consequences in Iraq today. We believe the intervention made by the Security council to find out the underlying truth of the perceived production of WMD BY Iraq, should have been dealt with properly. This would have prevented the United States of America (USA) from invading Iraq just because they felt threatened. In the historical context, we will address the history of UN, by analyzing documents from UN website archives and gain information about how UN Security Council is build and works as an organ to safeguard peace. We analyze and discuss these issues presented in the first section that have led to problems in Iraq today. Further we will address this by looking at how it has been discussed in literature from 2002 to 2003. An analysis of the unfinished work of the UN peacekeeping mission in Iraq will be included and a discussion about the main major organs of the UN, how they work as members. In explaining more of this, we will look at the UN and Iraq, we will look at the P5 and their way of recognizing the council’s value as an instrument in the way they work effectively. Basically, our main focus is on UN and its Security Council and the objectives of its 5 major members. We will address the historical background and policy of France, china and Russia. The focus on these three members will help us analyze how they acted against Iraq war 2003 and their motives behind peaceful relation in the international world. In the end we will argue on the justification of Iraq on the part of USA. This will help us to analyze, whether UN played their role as an actor or was just a Lens of an arena.