The aim of this Thematic Line is to analyse (and whenever possible to participate in and/or evaluate) the formal and informal public intervention processes of spatial planning, strategic planning, master or specific plans, and to glean further knowledge on the rationale of socio- territorial interventions that result from either public initiative (or financing) or citizens' movements in response to concrete problems. It also strives to tackle questions of regional and local development in light of the endogenous and exogenous dynamics of the territories, examining the respective development strategies in terms of the negotiation of interests of the different (public and private) agents involved and the resulting rationale of regulations and governance.