There are surely people in London who would love to play us off against each other. That would be disastrous for the EU.

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.

There are certain reactions that you aren't allowed to show in Berlin, for example that you feel offended. If you do, the best-case scenario is a sympathetic article along the lines of: Nice guy, but he's not up to it. The alternative is to don a suit of armor and become cynical. But that's not healthy either: Cynicism is the worst characteristic a politician can have. That's why you have to have an internal balance in Berlin, so you can stay true to yourself. And I have that.

The EU is a community of values, not military buildups.

I would have oriented myself in case of Donald Trump according to what former German Chancellor Gerhard Schröder said to then - U.S. President George W. Bush when the Americans launched a war that was in violation of international law. Schröder showed that a German chancellor can act in a clear and self-confident manner toward a U.S. president.

It's not attractive at the moment to vouch for the European idea. I still do it, because I believe nothing would be better for our continent.

For many people, politics in Brussels and Strasbourg might as well be happening on another planet.