The full form of UNO is United Nations Organization. It is an international body that was established in 1945 after the Second World War, with the aim of preserving international peace and security. The UN currently has 193 member states, and its work is guided by the purposes and principles outlined in its founding Charter. The main goal of the UN is to establish friendly relations between nations and contribute to the community, living standards, and human rights. The UN has several principal organs established by the UN Charter, including the General Assembly, the Security Council, the Economic and Social Council, the International Court of Justice, and the UN Secretariat.