The idea that the growing demand for energy worldwide can be met with energy from nuclear power is nonsense.

We, the Social Democrats, are convinced that capitalism needs to be tamed a second time. The first time we achieved that in Germany for many decades with the social market economy. That is no longer enough. Now we need to do it in Europe and even globally.

In Germany it is good if as many people as possible join initiatives and peaceful demonstrations against the rule of the financial markets. Worshipping the unfettered freedom of global markets has brought the world to the brink of ruin. We now need social and ecological rules for the market economy.

I'm hearing different things, but there is concern that stable Germany is no longer quite so stable.

Finding the right form of debate regarding Israeli policies will remain a challenge in Germany. Even with every conceivable and warranted criticism, the danger always arises that it will be exploited by those who consciously or unconsciously present anti-Semitism in a new guise.

The shadow of an exit of Greece from the euro zone takes on ever clearer shape, repeated apparently final attempts to reach a deal are starting to make the whole process look ridiculous. There is an ever greater number of people who feel as if the Greek government is giving them the run-around.

The G8 nations, together with the five major emerging economies of China, India, South Africa, Brazil, Mexico, use almost three-quarters of the Earth's biocapacity - the capacity of the world's ecosystems to produce natural resources and to reduce harmful substances.