The euro is a vital issue for Germany. There is no other country that derives as much benefit from the common domestic market and the monetary union as Germany.

Greece will not manage to get back on its feet without restructuring its debt. There is no way around it. The country's creditors will have to reduce a portion of its debts by extending maturity dates, lowering interest rates or giving them what's called a 'haircut' in financial jargon.

There are still deep-seated structural problems that threaten the economic balance in the world: Between the United States and China, for example, but also within Europe. We have taken a few steps toward taming the financial markets, but we haven't come nearly far enough to rule out a repetition of the crisis.

The euro is a vital issue for Germany. There is no other country that derives as much benefit from the common domestic market and the monetary union as Germany.

Nevertheless, I don't hesitate to say that elections in Germany are decided in the center, not on the fringes and not in the accumulation of minority interests.

If I had political responsibility, I would want to prepare for a plan B that would foresee that the European currency union, that the eurozone, no longer necessarily consists of 17 member states. And that means to make provisions so that other countries are not pulled into the maelstrom through contagion.

The U.S. will lose its status as the superpower of the world financial system. The world will become multi-polar.