Dutch foreign policy is focused on international cooperation as the key to maintaining peace and promoting security, prosperity and justice. During the first world war the country was neutral, but after occupation during the second world war it took a pro-active stance in world affairs, resulting in Den Haag (The Hague) becoming the home base for almost every organisation in the field of peace and administration of justice. The Netherlands has 110 embassies and other representations, consulates and missions throughout the world. These include political and economic missions (such as within the European Union), representation in Atlantic and European organisations aimed at international peace and security (NATO, the WEU and the OSCE) and also global institutions devoted to human rights and development (the United Nations, UNESCO, the IMF and the World Bank). The Dutch have been strong advocates of European integration (they were the host country for the 1992 Maastricht and 1998 Amsterdam treaties) and the postwar economic agreements with Belgium and Luxembourg, together with the Treaty of Rome, paved the way for the European Union.