ThefifthroundoftheEUenlargementonMay1,2004turnsthelong-cherished"utopia"ofaunifiedEuropeintorealitythroughapeaceful,economicapproach.①Thispaperattemptstomakesomeexplorationsonthefollowingissues:Whytheoptionforaneconomicapproach?Whatchangeshavetakenplaceinthenatureandbehavioroftherelevantnations?WhatimpactwilltheeventhaveonEuropeanstabilityandbalance?②HowwilltheEUkeepequilibriumthroughsystemicmechanismsincaseofinter-statedisputessoastolaythepoliticalgroundworkforapeacefulunification.
