▁wid est ▁pract ic able ▁development ▁of ▁international ▁co operation ▁in ▁obtain ing ▁this ▁source ▁of ▁energy , ▁which ▁is ▁essentially ▁in ex ha ust ible , ▁for ▁the ▁benefit ▁for ▁all ▁man kind ." ▁ ▁Con cept ual ▁and ▁engineering ▁design ▁phases ▁carried ▁out ▁under ▁the ▁aus p ices ▁of ▁the ▁I AE A ▁led ▁to ▁an ▁acceptable , ▁detailed ▁design ▁in ▁ 2 0 0 1 , ▁under p inned ▁by ▁US $ 6 5 0 ▁million ▁worth ▁of ▁research ▁and ▁development ▁by ▁the ▁" IT ER ▁Part ies " ▁to ▁establish ▁its ▁practical ▁feas ibility . ▁These ▁parties , ▁namely ▁EU , ▁Japan , ▁Russian ▁Federation ▁( rep la cing ▁the ▁Soviet ▁Union ), ▁and ▁United ▁States ▁( which ▁opt ed ▁out ▁of ▁the ▁project ▁in ▁ 1 9 9 9 ▁and ▁returned ▁in ▁ 2 0 0 3 ), ▁were ▁joined ▁in ▁negoti ations ▁by ▁China , ▁South ▁Korea , ▁and ▁Canada ▁( who ▁then ▁terminated ▁its ▁participation ▁at ▁the ▁end ▁of ▁ 2 0 0 3 ). ▁India ▁officially ▁became ▁part ▁of ▁I TER ▁in ▁December ▁ 2 0 0 5 . ▁ ▁On ▁ 2 8 ▁June ▁ 2 0 0 5 , ▁it ▁was ▁officially ▁announced ▁that ▁I TER ▁would ▁be ▁built ▁in ▁the ▁European ▁Union ▁in ▁Southern ▁France . ▁The ▁negoti ations ▁that ▁led ▁to ▁the ▁decision ▁ended ▁in ▁a ▁comprom ise ▁between ▁the ▁EU ▁and ▁Japan , ▁in ▁that ▁Japan ▁was ▁promised ▁ 2 0 % ▁of ▁the ▁research ▁staff ▁on ▁the ▁French ▁location