This strategy features in the framework of Agenda 21 as formulated at UNCED (Rio de Janeiro, 1992), now coordinated by the United Nations Commission on Sustainable Development and implemented through national and local authorities. In this regard, Agenda 21 recommends that coordination among bilateral and multilateral agencies should be strengthened, and also collaboration with international and national representatives of local authorities, the private sector and community groups.
The Settlement Infrastructure and Environment Programme (SIEP) programme of the UN Centre for Human Settlements (Habitat), is funded mainly by the Governments of Denmark, Germany and the Netherlands.