I really don't have time at the moment for coalition debates. The voters will decide what the next parliament will look like. Those who wish to form a coalition with The Social Democrats can take a look at our platform and then they are more than welcome to talk to us.

We all have to accept accusations that we ignored the refugee crisis for far too long. The first time that I referred to the Mediterranean Sea as Europe's cemetery was in October 2013, when hundreds of people drowned off Lampedusa. Italians, Maltese, Greeks and Spaniards have been pleading for help for years. But nobody cared.

Referendums have always posed a threat when it comes to EU policy, because EU policy is complicated. They're an opportunity for those from all political camps who like to oversimplify things.

We Germans are particularly aware that you can only be successful on the global market over the long term if you offer energy-efficient products that are, by nature, climate-friendly.

If Merkel has discovered Europe in a beer tent, I can only say: better late than never. Otherwise, it was the height of hypocrisy: The chancellor sat down for a beer with CSU Chairman Horst Seehofer, the man who after the election praised Donald Trump as a very resolute man.

We have committed ourselves to pursue joint policies, but then national governments say, "We aren't bound by that." That is a dramatic situation, because solidarity is a basic principle that cannot be had on an à la carte basis. If we have rules that nobody adheres to, then the community will break apart.

Complementing the nation-state as it reaches its limits amid globalization: That is what Europe must offer.