decis common accord level head state govern govern member state euro currenc appoint member execut board european central bank ec head state govern member state european commun euro currenc regard treati establish european commun articl articl protocol statut european system central bank european central bank regard recommend council regard opinion european parliament regard opinion govern council european central bank decid articl mr lorenzo bini smaghi appoint member execut board european central bank term offic year june articl decis publish offici journal european union brussel chairman asselborn oj opinion deliv publish offici journal oj