UN Environment is the leading global voice on the environment. It provides leadership and encourages partnership in caring for the environment by inspiring, informing, and enabling nations and peoples to improve their quality of life without compromising that of future generations. Regions4 is a representative of the Local Authorities Major Group in the Major Groups Facilitating Committee of the UN Environment and the UN Environment Assembly (UNEA). In this capacity, Regions4 facilitates subnational governments’ input and participation in the events and discussions of the UN environmental system. Also, since 2017, Regions4 is a supporter of the BreatheLife initiative, a partnership between UN Environment, the Climate and Clean Air Coalition and the World Health Organisation. This initiative promotes commitments and exchanges on reducing air pollution, and at least 10 subnational governments joined the initiative through Regions4.