We cannot treat people with a right to asylum the same way as people from a safe country. They need to be sent back. That is, from our perspective, completely clear. On the other hand, we should scrutinize the now completely outdated principle that only the migrants' first country of arrival should be burdened with their registration as well as with the process of sorting out who has the right to asylum and who needs to be deported.

Let's put it this way: I am confident that Schengen will continue to be defended. And when it comes to repatriations, we have the same opinion.

We [European countries] probably need to move forward together, each at their own speed. The faster ones, that could be the countries in the euro zone. The others would be those who are interested in the continued development of the common market, but reject the idea of an ever stronger political integration.

And a united Europe will also manage to send hundreds of thousands of migrants, who don't have the right to asylum, back to their homelands. Though that, given the number of flights necessary, would be of a scale reminiscent of the Berlin Airlift.

But it could be that we, as early as spring, will need to embark on a new policy in order to save one of the cornerstones of European politics: personal freedom of movement.

The message that "we can't take in everybody" is imperative. At the same time, the decision as to who has a right to asylum needs to be made in Brussels.

We need to move forward, from the common currency to the banking union to a common financial policy and, in the middle-term, to a common foreign and security policy. That will take time, because we need to figure out how to deal with those countries that don't always want a more tightly integrated European Union.