City diplomacy refers to the growing cooperation among cities and their associations, often in close conjunction with non-governmental organizations and the business community, on international initiatives to promote peace and conflict resolution.
(Knip 2007, 105)
Some key city diplomacy initiatives have included solidarity missions (e.g. between European Union cities and cities in the North Cauca region of Colombia), awareness raising, lobbying for international financial support and engagement, bringing conflict parties together in dialogue, and developing projects to support peace-building in conflict areas. The international organization of local governments, United Cities and Local Governments, has designated city diplomacy as one of its priority themes.
Knip, Peter. 2007. "City Diplomacy." In Human Security for an Urban Century: Local Challenges, Global Perspectives. http://www.interpeace.org/pdfs/Publications(Pdf)/Current_Reports/Human_Security_for_an_Urban_Century.pdf