Case C-28/12: Judgment of the Court (Grand Chamber) of 28 April 2015 — European Commission v Council of the European Union (Action for annulment — Mixed international agreements — Decision authorising the signing of those agreements and providing for their provisional application — Decision of the Council and of the Representatives of the Governments of the Member States meeting within the Council — Autonomy of the EU legal order — Participation of the Member States in the procedure and decision provided for in Article 218 TFEU — Voting arrangements within the Council)