commiss decis june extens durat agreement european atom energi commun govern japan govern russian feder govern unit state america cooper engin design activ eda intern thermonuclear experiment reactor iter commiss behalf commun notifi document number euratom commiss european commun regard treati establish european atom energi commun paragraph articl thereof council decis june approv extens durat agreement european atom energi commun govern japan govern russian feder govern unit state america cooper engin design activ eda intern thermonuclear experiment reactor iter decid articl durat agreement european atom energi commun govern japan govern russian feder govern unit state america cooper engin design activ eda intern thermonuclear experiment reactor iter extend behalf commun text amend extend iter eda agreement understand extens durat iter eda agreement append decis articl member commiss respons scienc research develop design repres author sign amend extend iter eda agreement purpos bind european atom energi commun brussel june commiss édith cresson member commiss page offici journal page offici journal