We will fight against any pro-nuclear power plan. And we will remind people that a change in the German nuclear consensus would stifle the development of sustainable energy and it would cost jobs. The SPD is the strongest among the opposition parties and we must take on this role with vigour.

When you think back today to a time more than 70 years ago when Germany was a terrible place, a place people were afraid of, it is a wonderful development that we have gone from being a terrible place to a place that people dream of.

The task for Germany today is - through its own policies and its own structural reforms, its own investments - to support the EU and the Commission... but every nation has to have the courage to broach such structural reforms and speak clearly about them without making people be afraid.

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

The truth is that we have long had a multi-track Europe with very different objectives. The traditional differences between the north and the south in fiscal and economic policy are far less problematic than those that exist between Eastern and Western Europe. In the south and east, China is steadily gaining more influence, such that a few EU member states no longer dare to make decisions that run counter to Chinese interests. You see it everywhere: China is the only country in the world that has a real geopolitical strategy.

The claim that democracy and efficiency are contradictory is nonsense. That's evident in the history of democracy itself, because it is only democrats who were and continue to be capable of learning from mistakes. A more appropriate question is to ask whether a country like China, which has been so incredibly successful economically, is actually inefficient in light of its environmental destruction and its corruption. In China's perception, however, the democratic model is doubtlessly inferior.

Economically and politically, Germany is extremely stable. There are countries with functioning governments whose institutions don't work. My only concern is about Europe. There's a risk we will run out of time. We have been blessed with a pro-European French president, but we are also approaching the next elections for the European Parliament in 2019, and it will be important for pro-European parties present a credible answer to the anti-Europeans on the left and the right.