One of the threats that the Eruozone's leadership has to confront these days is an increasing radicalization of the member states' voting public. On average the percentage of "extreme" votes/poll results has nearly doubled since the beginning of the crisis. Greece of course has been a prime example of this, but other nations may be faced with polarized electorates as well.
|Source: Credit Suisse|
Ultimately this will make it increasingly difficult for politicians from the various states to reach consensus as they face domestic pressures. And the Eurozone urgently needs consensus and decisiveness to assure the union's survival.