// An anthology of essays by the Great Powers and Urbanization Channel, offering a one stop shop for national security officials and urbanists alike trying to navigate global challenges in an urban world. Published by Diplomatic Courier in partnership with the Great Powers and Urbanization Project—a joint initiative of the University of Pennsylvania's Perry World House, the Chicago Council on Global Affairs, the University of Melbourne's Connected Cities Lab, the Barcelona Centre for International Affairs, the Argentine Council for International Relations, and the African Centre for Cities.