The governmental body formed to prevent future world wars after World War II is the United Nations (UN). Established in 1945, the UN aimed to foster international cooperation, maintain peace and security, and promote human rights across the globe. Following the devastating impacts of World War II, leaders sought a platform to resolve conflicts diplomatically to avoid further large-scale warfare. The UN has since played a pivotal role in various humanitarian efforts, peacekeeping missions, and promoting sustainable development, although its effectiveness has sometimes been challenged by geopolitical tensions among member states.