Even during the Second World War, people started to think of ways to prevent future wars. In order to facilitate cooperation and consultation between nations, an international organisation was set up: The United Nations (UN). The founding treaty was signed by 51 countries and came into force on 24 October 1945.
This Charter set out the objectives of the UN, the obligations of its member countries, and its powers. For example, the United Nations have an international court, which mediates in conflicts between countries. The Charter also states that the UN can intervene militarily around the world to stop crimes. Today, the United Nations has 193 member states.
