Sustainable developm ent policies and measures are not a panacea. In particular they do not change the need for industrialized countries to lead with explicit action to mitigate their own GHG emissions. By itself, the approach may not guarantee a particular environmental outcome - although this would depend on the number and ambition level of the policies implemented. The approach, however, is aimed at mobilizing action, by turning climate change from a 'threat' to development into genuine opportunity to make development sustainable for developing countries. The approach does not require an entire new Protocol or mechanism, but 'only' a decision by the COP.