At the end of the day, men like Donald Trump need to be given that which they themselves dispense: clear messages. I would confront him as clearly and explicitly as possible. It is not only the right, but also the duty, of the leader of a German government to do that.

Many who have voted for the AfD, or who intend to do so, aren't doing so because they are dyed-in-the-wool enemies of democracy. Rather, they are desperate.

When it comes to climate protection, the whole world will have to pay the price. But if Donald Trump intends to conclude a trade agreement with the EU, he will have to abide by our climate standards. In any case, waiving climate protection does not make American products more competitive.

The construction of social housing and the attempt to support families seeking to buy their own homes are all projects from the 1960s and '70s. It all sounds old-fashioned, but it is actually completely modern.

Politics is a dynamic process. When I was a young man in the 1970s, Yasser Arafat had just perpetrated various terrorist attacks. Just a few years later, after I had entered European Parliament, the same Yasser Arafat was given the Nobel Peace Prize.

CDU head Angela Merkel has tried for years to serve two sides: the conservative side by holding up her CDU party membership. But then at the same time she acts as though she were also a Social Democrat. I don't have this hydra-headed nature. In the end, people will vote for the Social Democratic original.

For German Social Democracy, Europe is vital to the national interest.