ific ▁Str ateg ic ▁Econom ic ▁Part ners hip ▁agreement ▁or ▁Pacific - 4 ). ▁Neg oti ations ▁on ▁the ▁Trans - P ac ific ▁Str ateg ic ▁Econom ic ▁Part ners hip ▁Ag re ement ▁( TP SE P ▁or ▁P 4 ) ▁were ▁concluded ▁by ▁Br une i , ▁Chile , ▁New ▁Zealand ▁and ▁Singapore ▁on ▁ 3 ▁June ▁ 2 0 0 5 , ▁and ▁entered ▁into ▁force ▁on ▁ 2 8 ▁May ▁ 2 0 0 6 ▁for ▁New ▁Zealand ▁and ▁Singapore , ▁ 1 2 ▁July ▁ 2 0 0 6 ▁for ▁Br une i , ▁and ▁ 8 ▁November ▁ 2 0 0 6 ▁for ▁Chile . ▁ ▁The ▁original ▁T P SE P ▁agreement ▁contains ▁an ▁acc ession ▁clause ▁and ▁aff ir ms ▁the ▁members ' ▁" commit ment ▁to ▁encou rage ▁the ▁acc ession ▁to ▁this ▁Ag re ement ▁by ▁other ▁econom ies ". ▁It ▁is ▁a ▁compreh ensive ▁agreement , ▁affect ing ▁trade ▁in ▁goods , ▁rules ▁of ▁origin , ▁trade ▁rem ed ies , ▁san it ary ▁and ▁ph yt os an it ary ▁measures , ▁technical ▁bar riers ▁to ▁trade , ▁trade ▁in ▁services , ▁intellectual ▁property , ▁government ▁proc ure ment ▁and ▁competition ▁policy . ▁Among ▁other ▁things , ▁it ▁called ▁for ▁reduction ▁by ▁ 9 0 ▁percent ▁of ▁all ▁tar iffs ▁between ▁member ▁countries ▁by ▁ 1 ▁January ▁ 2 0 0 6 , ▁and ▁reduction ▁of ▁all ▁trade ▁tar iffs ▁to ▁zero ▁by ▁the ▁year ▁ 2 0 1