European leaders have been battling to get on top of the debt crisis for more than 18 months.
In July, the leaders strengthened their 440-billion euro bailout fund by allowing it to lend pre-emptively to governments in distress and buy bonds in the secondary market.
But the decisions have not yet been fully implemented, undermining confidence in the ability of the euro zone to tackle the problems.
Responding to market worries about the Euro-zone crisis, European Commission President Jose Manuel Barroso proposed to issue joint bonds to tackle the crisis.
The so-called Euro-bonds would allow member states to borrow money collectively.
