Brussels: Euro zone finance ministers face pressure to increase the size of a 750 billion euro (Dh 3.662 trillion) safety net for crisis-hit members in order to halt contagion in the single currency bloc.

Dominique Strauss-Kahn, the head of the International Monetary Fund (IMF), called on the ministers to boost the facility and urged the European Central Bank (ECB) to step up its purchases of bonds to stem the crisis, according to an IMF report obtained by Reuters.

Bond buying by the ECB helped calm markets at the end of last week, lowering the borrowing costs of countries such as Portugal, Spain and Italy which have come under intense market pressure in recent weeks.

But that may have been only a temporary respite for the 16-nation currency bloc, which some experts believe may not survive in its current form if the debt crisis rages on much longer.

Ewald Nowotny, a member of the ECB governing council, said on Austrian television that the euro zone economy had become so closely intertwined that splitting off peripheral states with debt problems would be counterproductive.

"Europe has already grown together so much than an amputation would have massive disadvantages for both sides," he said.

Luxembourg's Prime Minister Jean-Claude Juncker and Italian Finance Minister Giulio Tremonti called for the issuance of joint European sovereign bonds — or ‘E-bonds' — to assert the "irreversibility of the euro".

The pair, in a column published in yesterday's Financial Times, said the creation of a European Debt Agency that could issue such bonds would be possible as early as this month if the body that represents member states endorsed it.

The IMF report says a recovery in the euro zone, led by strong growth in its largest economy Germany, could "easily be derailed" by renewed market turmoil and describes pressure on so-called peripheral euro countries as a "severe downside risk".

The report argues that there is a "strong case" for boosting the size of the EU/IMF rescue facility and using the funds more flexibly, including to support banks.

But Spanish Economy Minister Elena Salgado said increasing the size of the fund was "not the question for the moment".

In an interview with French business daily Les Echos, she also said Spanish economic fundamentals were sound and the country would not appeal for financial support from the aid mechanism.

The IMF paper also urges the ECB to expand its bond purchasing programme until systemic uncertainties recede.

Policy meeting

ECB President Jean-Claude Trichet said after a policy meeting of the central bank on Thursday that extraordinary measures to combat the crisis would remain in place, but did not signal any increase in the bond purchase programme as some economists had predicted.

The bond buying is controversial within the bank's governing council and influential Bundesbank head Axel Weber called earlier this year for it to be scrapped altogether.

The German government has resisted calls for an increase in the EU rescue facility, aware that German taxpayers would have to shoulder the biggest share of any additional bailouts, but Berlin could be forced to drop its objections if market pressures build this week.