Traditionally, the idea of a sovereign is being connected either with an absolutist ruler (later replaced by “the people”) at the national level, or the nation-state at the international level – at least in the conditions of the Westphalian system created in 1648. Today, on the contrary, we are witnessing a “post-” situation in many respects – post-modernism, post-positivism, but also post-statism – basically being a sort of return to the pre-Westphalian system (see Ondrej Hamuľák, “Lessons from the ‘Constitutional Mythology’ or How to Reconcile the Concept of State Sovereignty with European Integration,” DANUBE: Law, Economics and Social Issues Review Vol. 6, No. 2 (2015); or Danuta Kabat-Rudnicka, “Autonomy or Sovereignty: the Case of the...