The United Nations was established in 1945 with 51 founding member countries committed to maintaining international peace. It currently has 192 member states. The UN has four main principles: maintaining international peace and security, developing friendly relations among nations, cooperating to address global problems, and promoting human rights. The UN's main bodies include the General Assembly, Security Council, Economic and Social Council, Trusteeship Council, Secretariat, and International Court of Justice. The General Assembly is the main deliberative body composed of all member states and handles budgets, admissions, and other issues. The Security Council works to maintain peace and security and has five permanent members. Specialized agencies like the WHO and World Bank are also linked to but autonomous from the UN.