In politics, there are different categories of friendship. My friendship with Greek Prime Minister Alexis Tsipras, for example .

It's important to recognize that we in Europe will either succeed together or fail together.

Many in Germany are saying that Macron should be helped. That's also how I see it. But Germany cannot solve France's problems. The French president and his government will have to seriously knuckle down in order to pull France out of its slump.

I like Macron a lot and I very much welcome him - particularly the fact that he made Europe one of the main topics of the election debate.

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.

The position of EU commissioner for economic and monetary affairs could be combined with the office of Euro Group chairman. That job would be a great challenge for anyone who assumed it. On the one hand, he would have to make proposals. On the other hand, he would have to negotiate compromises with his European counterparts.

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.