IN AUTUMN 1983, THE UN GENERAL ASSEMBLY ASKED THE UN GENERAL SECRETARY TO ESTABLISH a Commission to develop 'a global agenda for change', or more precisely 'long-term environmental strategies' that take into account the interrelationships between people, resources, environment and development on a global scale (WCED, 1987, ix). A few weeks later, General Secretary de Cuellar won the Norwegian politician Gro Harlem Brundtland as chair of the Commission on Environment and Development. The commission of 22 experts started working in October 1984. After two and a half years of debate and public hearings around the world, it published Our Common Future (WCED, 1987), essentially the first global sustainable development (SD) programme or strategy in a broader sense that explored the future of both the 'what?' and the 'how?' of policy making.In the 20 years since this defining event, the SD concept became a more moderate and mainstream reform agenda that aims in particular at better integrating economic, social and environmental policies at all government levels. Since this integrative objective is not well attuned with the sectoral structure and the functioning of governments, the SD agenda did trigger several innovative governance arrangements (such as inter-ministerial committees) as well as new policy and assessment tools (such as green budgeting and SD indicator sets), many of which are (supposedly) held together and orchestrated by comprehensive governmental SD strategies. This special issue takes stock of this development. With two general papers and three country studies on Germany, Norway and the UK, the special issue explores to what degree SD strategies at the national level have become the centre-tool of SD policy making in Europe. It describes some key characteristics, strengths and weaknesses of selected national SD strategies, and it explores the possibilities and limitations of reflexive governance and strategic management in the public sector. This stocktaking gives a preliminary idea of how effective SD strategies are in reshaping policies, and how their performance could be improved. Let us now briefly chart the way from the Brundtland Report, via sectoral environmental plans, to cross-sectoral SD strategies. The editorial then introduces the five contributions of this special issue, and it lays out the analytical framework used in the three country studies.