council decis june conclus agreement form exchang letter european commun republ cypru ad protocol mutual administr assist custom matter associ agreement european econom commun republ cypru ec council european union regard treati establish european commun articl conjunct sentenc subparagraph articl thereof regard propos commiss mutual administr assist custom matter parti provid associ agreement european econom commun republ cypru protocol ad agreement negoti effect place republ cypru led agreement form exchang letter commun interest approv decid articl agreement form exchang letter european commun republ cypru ad protocol mutual administr assist custom matter associ agreement european econom commun republ cypru approv behalf commun text agreement form exchang letter attach decis articl presid council authoris design person empow sign agreement form exchang letter order bind commun articl presid council behalf commun give notif provid agreement form exchang letter luxembourg june council presid winberg oj