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LONG-RUN ECONOMIC ASPECTS OF THE EUROPEAN UNION’S EASTERN ENLARGEMENT6.4.3 THE INTEREST RATE AND EXCHANGE RATE CRITERIAInterest rate convergence will result from a stable exchange rate. For this reason<strong>the</strong> exchange rate stability criterion can be viewed toge<strong>the</strong>r with <strong>the</strong> criterion oninterest rates. Most candidate countries already now orient <strong>the</strong>ir exchange ratepolicies towards <strong>the</strong> Euro. As our analysis <strong>of</strong> inflation trends will show, <strong>the</strong>re is noreason why <strong>the</strong>y should not be able to achieve exchange rate stability comparableto that within <strong>the</strong> pre-1992 ERM. However, a problem might arise because <strong>the</strong>Treaty speaks <strong>of</strong> ‘<strong>the</strong> observance <strong>of</strong> <strong>the</strong> normal fluctuation margins provided forby <strong>the</strong> exchange rate mechanism <strong>of</strong> <strong>the</strong> European Monetary System, for at leasttwo years, without devaluing against <strong>the</strong> currency <strong>of</strong> any o<strong>the</strong>r member state.’118This is a provision that needs to be re-interpreted in <strong>the</strong> light <strong>of</strong> enlargement.Taken literally, it would seem to imply that formal membership <strong>of</strong> <strong>the</strong> EMS for twoyears is a pre-condition for admission to <strong>the</strong> Euro area. In order to give candidatecountries a chance to join <strong>the</strong> Euro immediately upon enlargement <strong>the</strong>y wouldhave to be allowed to join <strong>the</strong> EMS already before joining <strong>the</strong> EU. Whe<strong>the</strong>r or notnon- EU members could join <strong>the</strong> ERM-II as it exists, or whe<strong>the</strong>r one would need toconstruct at least formally a sort <strong>of</strong> ERM-III needs to be discussed. If nei<strong>the</strong>r <strong>of</strong><strong>the</strong>se solutions can be implemented, insisting on formal EMS membership wouldseem to be manifestly absurd in cases like Estonia. This country is de facto alreadya unilateral member <strong>of</strong> <strong>the</strong> Euro area and, by <strong>the</strong> time it joins <strong>the</strong> EU, will have hadten years without any exchange rate instability.There is ano<strong>the</strong>r problem with <strong>the</strong> exchange rate stability criterion. Experience hasshown that <strong>the</strong> most serious difficulties arise during <strong>the</strong> final phases <strong>of</strong> inflationconvergence if capital controls have already been lifted. A number <strong>of</strong> candidatesare entering this dangerous period right now, and one cannot exclude that <strong>the</strong>ywill have to face speculative attacks on <strong>the</strong>ir currencies. The argument that <strong>the</strong>perspective <strong>of</strong> enlargement protects <strong>the</strong>m against attacks similar to that against<strong>the</strong> Russian rouble, is not convincing, as is shown by <strong>the</strong> episodes <strong>of</strong> speculativeattacks even within <strong>the</strong> EU.The ERM-II will in any way be quite different from its predecessor. The existingformal provisions for <strong>the</strong> ERM-II have not been tested yet. They are so vague as togive little guidance to <strong>the</strong> market, should problems arise. In our view <strong>the</strong> ERM-II(or any ERM-III arrangement) is likely to remain de facto a unilateral peg. The keyfactors determining <strong>the</strong> nature <strong>of</strong> <strong>the</strong> relationship between <strong>the</strong> Euro area and <strong>the</strong>candidate countries' currencies are <strong>the</strong>ir huge differences in size and reputationfor price stability. The Euro area is likely to remain at least twenty to 40 timeslarger than <strong>the</strong> accession countries combined. This is even more lop-sided than <strong>the</strong>relative weights that made <strong>the</strong> links <strong>of</strong> <strong>the</strong> Dutch Guilder and <strong>the</strong> AustrianSchilling to <strong>the</strong> Deutschmark (DM) so one-sided.

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