With city-regions becoming increasingly important as sources of innovation and wealth in our society, does it follow that their institutions of government will become increasingly autonomous, allowing them to become self-governing?Andrew Sancton combines his own broad knowledge of global changes with an outline and comparison of the viewpoints of prominent social scientists to argue that city regions in western liberal democracies will not and cannot be self-governing. Self-government requires a territory delineated by official boundaries, but the multiple boundaries of city-regions, unlike the clear and undisputed boundaries of provinces and states, continue to move outward due to the constant growth and expansion of urban populations and services.The Limits of Boundaries clearly shows that difficulties in reaching agreements on boundaries fatally limit the capacity of city-regions to be self-governing.