council decis decemb lai procedur adopt commun posit custom union joint committe set decis ec turkei associ council implement final phase custom union ec council european union regard treati establish european commun articl thereof regard propos commiss regard opinion european parliament decis ec turkei associ council establish custom union joint committe committe empow frame recommend associ council decis make power case provid decis purpos joint committe proceed lai rule adopt common posit basi commun repres joint committe commiss enter commit vi vi turkei joint committe task ensur proper function custom union freedom trade parti common posit adopt commun fall scope articl treati procedur provid articl rule appli provid common posit relat applic commun legisl technic adjust assess anti competit behaviour adopt commiss adopt decis articl subject articl posit commun custom union joint committe adopt council act qualifi major propos commiss articl posit commun custom union joint committe adopt commiss posit relat simpl transposit custom union act commun law mean technic adjust assess anti competit behaviour annual report commiss implement custom union inform european parliament decis joint committe articl decis publish offici journal european commun brussel decemb council presid delvaux stehr oj opinion deliv novemb publish offici journal oj