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ntries are not only suffering from excessive deficits and debts, but also economic unbalances (i.e. excessive current account deficits). The current account positions are becoming worse due to, among other reasons, their extremely uncompetitive trade position. As a consequence, they are beginning to blame the euro.

The problem that these countries are facing originates from the fact that monetary union amplifies fiscal imbalances. Opting for devaluation of a competitive currency is not an option and the only other alternative stems from forcing differentials of bond yield reduced. In 2005 there were almost no yield differentials between the German Bund and the yields of those countries with excessive current-account deficits. In 2009, however, yield spreads has increased government default risks measured by a sudden increase in the demand for credit default swaps. Hence, the current economic crisis has demonstrated that currency risk is replaced by default risk in a monetary union. There are two reasons for this situation: 1) the sovereign debt of each member country is issued under the control of each Ministry of Finance, 2) there is no European Ministry of Finance.

The Germans has proposed the creation of a European Monetary Fund, the French league has proposed the creation of a European Debt Agency which required that the Lisbon Treaty were amended or that a new treaty were negotiated. Many people blamed this situation due to the lack of a common bond market which would help to put all members together. Some people reject the suggestion based on the fact that a common bond market would lower borrowing costs for weaker countries and increase costs for stronger countries such as Germany. In addition, the common bond market would obtain the budget rights from each governments which would not be able to make national budgets by themselves.

Exit clause 退出条款
For years some countries have not respect or followed the requirements listed in the Maastricht Treaty and are now facing extremely difficult economic situations. It is obvious in the current crisis that there is no political homogeneity among member countries from a political point of view. As a result, each member country has implemented its own particular economic model and how to conduct its own economic model. In addition, Greece, Spain, and Portugal do not truly realise that their economic models are embedded in a globalised economy and these countries need to implement a set of painful structural reforms to keep them competitive. From the economic point of view, the countries in trouble have two major common reasons. The reasons are the lack of respect for the requirements and the lack of appropriate implementation of the structural reforms required under an economic recession.

Currently there are debates on what should or should not be done with these countries. However, there are not room to manoeuvre this situation under the current legal framework.

Expulsion of these countries from the Eurozone is not a good choice as it would definitely hurt the image of the EU and its member countries. Many scholars, economists propose that voluntary withdrawal from only the Eurozone while staying in the EU to would be the most beneficial option.

The legal framework - the Treaty of Lisbon, does not provide the necessary methods to deal with problems of withdrawal, expulsion fro