ICLEI - Local Governments for Sustainability is the world's leading association of cities and local governments dedicated to sustainable development. ICLEI is a powerful movement of 12 mega-cities, 100 super-cities and urban regions, 450 large cities, 450 small and medium-sized cities and towns in 86 countries. ICLEI promotes local action for global sustainability and supports cities to become sustainable, resilient, resource-efficient, bio diverse, and low-carbon; to build a smart infrastructure; and to develop an inclusive, green urban economy with the ultimate aim to achieve healthy and happy communities.