The document discusses sustainable peace and how to achieve it. It defines peace as a treaty or agreement to end a war, while durable means lasting only for a limited time. A durable peace is a lasting agreement between countries to end war. The most effective way to achieve durable peace is through negotiations, treaties, and friendly diplomatic relations that seek to resolve economic, social, territorial, and other causes of conflict. In 1915, the Central Organization for a Durable Peace was established in The Hague with members from nine European nations and the US to promote new diplomacy and accept sanctions against aggressors, but it was dissolved after the Treaty of Versailles.