The problem is: When two governments or institutions in Europe hold differing opinions, it is immediately a crisis.

With hindsight, it is always easy to blame everyone else.

Much as I would have liked to respond factually and truthfully to each and every piece of misinformation spread by the Brexit campaign, it was important that I stayed out of the domestic political debate. It was David Cameron's task to win the UK referendum, not ours.

Without the Turkey agreement, tens of thousands of refugees would still be stuck in Greece. The Commission presented proposals for securing Europe's external borders early on, but they languished in the Council for months. As you can see, the Commission isn't asleep. Oftentimes it has to wake up the others.

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

There is a proposal to divide the currency zone into a north and a south euro. There is also the idea of setting up a core monetary union in the middle of Europe. I disapprove of these debates. Instead, we should devote all of our efforts to supplementing the monetary union with a political union.

We must go back to teach Europeans to love Europe.