Dr Igor Calzada participates on 26th and 27th September 2019 in Barcelona on the ‘Workshop on Public Policy, Cities and the State’ co-organised by the UPF (Barcelona) and SciencesPo (Paris). He presents a paper about a forthcoming publication: Calzada, I. (2020), Emerging Citizenship Regimes and Rescaling (European) Nation-States: Algorithmic, Liquid, Metropolitan and Stateless Citizenship Ideal Types. In Sami Moisio, Andrew EG Jonas, Natalie Koch, Christopher Lizotte, Juho Luukkonen and Matthew Sparke (eds), Handbook on the Changing Geographies of the State: New Spaces of Geopolitics. Cheltenham, UK and Northampton, MA, USA: Edward Elgar Publishing. [Forthcoming] DOI: 10.13140:RG.2.2.17301.6832/1. Here is the reference of the paper: Calzada, I. (2019), Emerging Citizenship Regimes and Rescaling (European) Nation-States: Algorithmic, Liquid, Metropolitan and Stateless Citizenship Ideal Types. Workshop on Public Policy, Cities and the State jointly co-organised by the Universitat Pompeu Fabra-Barcelona (UPF), Department of Political and Social Sciences & SciencesPo (Centre d’Études Européennes et de Politique Comparée)-Paris, UPF, 26-27 Sept., Barcelona (Spain).