International audienceIn this multidisciplinary work, thirty-two authors from thirteen different countries - jurists, political scientists, economists, geographers and historians – explore the phenomenon of the territorial reorganisation of both federal and unitary States in the current global geopolitical and economic context. Does this phenomenon reveal a dynamic of an increasing division of power along different levels or, on the contrary, does it hide a certain recentralisation of power?The comparative study of regions/federated States and other national subdivisions and their situation not just within the nation State but also within an increasingly federal Europe - itself developing in an increasingly regionalised world – shows that f...