How does IR Theory explain the United Nation’s contribution to the maintenance of international peace and security?

How does IR Theory explain the United Nation’s contribution to the maintenance of international peace and security?
“More than ever before in human history, we share a common destiny. We can master it only if we face it together. And that is why we have the United Nations.” (Annan: 2001)

It is generally considered that international organisations ought to stand accountable for the preservation of global stability and peace, be this social, financial or diplomatic; also they must perform in the benefit of the international society.
The UN was formed for the principle of advocating and maintaining international peace and security, which combines many responsibilities to re- picture the world in a new reasonable way. Tim Dunne describes United Nations as “a multi-purpose agency directed to specific goals including collective security, peace-keeping, health, environmental and human rights concerns” (Dunne, 2007, p.103). Provided that the UN is a ‘multi-purpose’ organization, it will be improper to explain its contribution to the international scene centered on a specific objective; therefore this paper will present a description of UN and its activities, followed by an empirical assessment of Realism in United Nations peacekeeping. The closing section will portray a perspective of the IR theory that is relevant to the UN role in maintaining peace and security.
The UN peace and security activities have climbed to unmistakable quality as tools of international activity because of its promise of the formation of extra impartial world. After its beginning in 1945, the UN embraced the idea of collective security, played an important part in decolonization and began a range of activities like peacekeeping, peacemaking, peace enf...

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...ing model conflict resolver.
The last method with which IR describes United Nations contribution to peace is as a perception of humanitarian intervention. Collectively with the proposal of Responsibility to Protect, the perception of humanitarian intervention is a segment of extensive collection of principles and conflict-management tools that have helped to improve the world. These models have caused the decline of mass atrocities, war, genocide, and armed conflicts (Western, 2011).
As this paper has established, the topic “How IR explain UN contribution to peace and security” has a range of views and understandings subject to the school of thought one pursues. IR theory is a significant field in comprehending international matters specifically reducing the prospects of war; significantly this theory has grown to become a fundamental facet of United Nations.