Climate protection creates sustainability and jobs in the real economy - in construction, in the production of heavy machinery and in systems engineering.

In the past, Germany could rely on the French, the British and, especially, the Americans, to assert our interests in the world. We have always criticized the U.S. for being the global police, and it was often appropriate to do so. But we are now seeing what happens when the U.S. pulls back. If the U.S. leaves the room, other powers immediately walk in. In Syria, it's Russia and Iran. In trade policy, it's China. These examples show that, ultimately, we are no longer achieving either - neither the dissemination of our European values nor the advancement of our interests.

It is clear that there are reasons for discontent in Iran - economic and political reasons. We have told the Iranian leadership repeatedly that the country's economic recovery can ultimately only succeed through greater international economic cooperation. And the precondition for that is not only that Iran refrain from developing nuclear weapons, but also that Iran's role in the region become far more peaceful. We have offered to finally hold true negotiations and talks on that issue.

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

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.

Political scientist Herfried Münkler is right: If you only take normative positions, if your focus is solely on values, you won't find success in a world where others are relentlessly pursuing their interests. In a world full of meat-eaters, vegetarians have a tough time.

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.