decis council repres govern member state european commun meet council septemb practic measur econom cooper ec canada joint committe ecsc eec euratom council european commun repres govern member state meet council decid practic measur econom cooper initi commun ec canada joint committe common posit agre commun usual procedur proviso appli circumst irrespect extent common polici exist sector concern brussel septemb presid van der stoel