council decis decemb conclus addit protocol interim agreement trade trade relat matter european econom commun european coal steel commun part republ poland part europ agreement european commun member state part republ poland part ec council european union regard treati establish european commun articl conjunct articl thereof regard conclus european council place copenhagen june regard propos commiss commiss negoti behalf commun addit protocol interim agreement trade trade relat matter europ agreement republ poland approv addit protocol decid articl addit protocol interim agreement trade trade relat matter european econom commun european coal steel commun part republ poland part europ agreement european commun member state part republ poland part approv behalf european commun text addit protocol attach decis articl presid council author design person empow sign addit protocol behalf european commun presid council give notif provid articl addit protocol behalf european commun brussel decemb council presid clae