ICLEI engages at the local to global levels, shaping policy and sparking action to transform urban environments worldwide. They build connections across levels of government, sectors and stakeholder groups, sparking city-to-city, city-to-region, local-to-global and local-to-national connections. By linking subnational, national and global actors, policies, commitments and actions, ICLEI strengthens action at all levels, in support of sustainable urban development.