You'll find twenty-7 member states which have conferred powers upon the EU establishments (other nations around the world are tied to the EU in other ways). In Trade for conferring competences, EU states are assigned votes in the Council, seats in Parliament and also a European Commissioner between other matters. https://european-news32097.blogtov.com/7770668/icc-seeking-arrest-warrants-for-hamas-leaders-and-israel-s-netanyahu