All rights reservedFlint Ashery, Shlomit2023-08-242023-08-242017978-989-99801-3-6 (E-Book)https://hdl.handle.net/20.500.14235/567Book of proceedings: Annual AESOP Congress, Spaces of Dialog for Places of Dignity, Lisbon, 11-14th July, 2017Urban planning developed during the twentieth century under conditions of strong national welfare states and relatively weak civil societies (Davies, 2001). The need to protect the public interest and guarantee its rights led to the establishment of hierarchical planning systems throughout the developed world. Planning mechanisms were designed to guarantee equal allocation of resources and appropriate infrastructure for various sectors (Dean, 2011, Piketty, 2014). In the urban realm in recent years, the unprecedented scale of urban transformation and the weakening of the social, economic, and political frameworks that constitute the background for planning, has meant that the impact and the pressure of direct cooperation of interest groups on urban space has considerably increased (Alexander, 2002; Kolossov, 2005). Planners and politicians have to cope with interest groups characterised by diverse institutional structures, access to resources, and inconsistent territorial interests; a particular challenge to the planning system is posed by groups committed to non-liberal values and concepts.English'Decision not to decide': a new challenge for planningConference paper59-74