The principle of the separation of powers, far from being simply a constitutional principle for the organisation of public powers, is actually one of the traces that enables us to historically reconstruct the changes in constitutionalism and the original idea of defending the individual from the will of state power. We are today in the midst of a deep transformation of the public sphere, and more specifically of the boundaries of constitutionalism. The traditional categories of public law are challenged by new phenomena (terrorism, mass migration, economic crisis and in many countries we are facing unprecedented crisis (Hungary, Poland, Turkey). In light of the current constitutional law changes, are we witnessing the rise of a new model of the Separation of powers? And if so, which are its features and its spirit?