For example, LEDS can provide information to better assess global climate change impacts and actions and how mitigation actions are expected to impact emission trajectories. Another important purpose of a LEDS could be to highlight gaps and identify priority actions for funding to the international community. The Rio Summit under Agenda 21, for example, introduced the concept of National Sustainable Development Strategies (NSDS), and suggested that all countries ‘should’ develop one. These strategies aim to build upon and harmonise the various sectoral economic, social and environmental policies and plans that are operating in the country.