1) In 1992, Agenda 21 called for countries to develop national strategies for sustainable development, but provided no guidance. By 2002, most countries had still not introduced strategies.
2) In 1999, the OECD launched a project with 8 developing countries to clarify what effective national strategies entail. This involved stakeholder dialogues and reviews of existing sustainable development processes.
3) The project resulted in the first definition of a national strategy for sustainable development as a "coordinated set of participatory and continuously improving processes" that seeks to integrate economic, social and environmental objectives.