http://dx.doi.org/10.17176/20161110-163718 https://staging.verfassungsblog.de/the-big-picture/ The Big Picture Zucca, Lorenzo eng 2016-11-10 electronic resource text/html ddc:342 brexit Constitutional Moment division of powers European Federalism Parliamentary Sovereignty Verfassungsblog Verfassungsblog--2366-7044 CC BY-NC-ND 4.0 In Europe, UK, and USA constitutional structures are proving unfit to respond to the challenges of the XXI century. Now is the time to ride on the constitutional moment for the all three of them.