I am for it - not to make a threat, but to make clear that decisions that have been made are applicable law, even if you have voted against it. At issue here is European solidarity, which cannot be a one-way street. The traffic has to move in both directions.

I am, however, deeply saddened by this [Brexit] vote by the British electorate. But I respect their decision. What is crucial now is that we focus very precisely on what Europe can do for people: stimulate investment, create jobs and together ensure the safety and security of our citizens.

In Europe, even more so than in national politics, we have to follow the principle laid down by Martin Luther: Use language that the people will understand, but don't just tell them what they want to hear.

My friendship with Martin [Schulz], by contrast, is completely different in that it goes far beyond politics.

I completely agree with Helmut Kohl. I am not an advocate of the "United States of Europe," nor am I an integration fanatic.

Since populists never miss an opportunity to create a lot of noise about anti-Europe stance. However, the repercussions of the British referendum could quickly put a stop to such crass rabble-rousing, as it should soon become clear that the UK was better off inside the EU - economically, socially and in foreign policy terms.

My father was a steel worker and Martin's [Schulz] grandfather was a miner in Saarland. In these occupations, there is a particular awareness of solidarity. That creates links that aren't present in other relationships.