Explanations of EPI that focus on political factors must also account for and explore the impacts of the behaviour of individual political leaders. Our Common Future cannot be understood unless at least some reference is made to its lead author, Gro Harlem Brundtland. Similarly, in Germany, Sweden and the UK, the introduction of the most influential EPI instruments can be linked to the political visions and projects of particular political leaders such as Willy Brandt (the ‘modern Germany’), Göran Persson (the ‘green people’s home’) and Tony Blair (‘greening government’), respectively.