The United Nations (UN) was established to promote international cooperation and peace. Founded in 1945 after World War II, the UN aims to prevent future conflicts and foster global collaboration through dialogues, humanitarian assistance, and peacekeeping missions. Its various agencies address issues such as human rights, refugee support, and sustainable development. By providing a platform for diplomacy, the UN is crucial in maintaining international stability and addressing transnational challenges, though its effectiveness can sometimes be impeded by geopolitical tensions.