Syria has become the great tragedy of this century - a disgraceful humanitarian calamity with suffering and displacement unparalleled in recent history.

We can't deter people fleeing for their lives. They will come. The choice we have is how well we manage their arrival, and how humanely.

The international community has to overcome its differences and find solutions to the conflicts of today in South Sudan, Syria, Central African Republic and elsewhere. Non-traditional donors need to step up alongside traditional donors. As many people are forcibly displaced today as the entire populations of medium-to-large countries such as Colombia or Spain, South Africa or South Korea.

While every refugee's story is different and their anguish personal, they all share a common thread of uncommon courage - the courage not only to survive, but to persevere and rebuild their shattered lives.

I think that it's very important to have the United States' engagement in many situations we have around the world, be it in Syria, be it in the African context. The United States represents an important set of values, human rights, values related to freedom, to democracy. And so the foreign policy engagement of the United States is a very important guarantee that those values can be properly pursued.

It is, for me, clear that the world needs a United States that is engaged in security issues, in development issues, in human rights issues. The contribution of the United States for global affairs is absolutely crucial. And the cooperation with the U.N. is very important from our perspective.

What I think it's important to recognize in today's world is that all of our societies are multiethnic, multi-religious and multicultural. And that is a positive thing. That's a richness, and also strength. But we also have to recognize that, for those societies to be harmonious, there is a lot of the investment that needs to be made in social cohesion and inclusivity. But the important thing to recognize, and particularly Europe, most of the terrorist attacks are not done by people that came from the outside. They are homegrown.