Global climate change is one of the greatest challenges facing humanity in the twenty-first century.

Partners like the United States and Germany must always discuss all issues, including these questions. I welcome the fact that a discussion over legitimate methods of questioning and interrogation is taking place in both Germany and the United States.

We were able to conclude a Paris climate agreement, which will lead the way for the rest of the world, which is groundbreaking. And together with the sustainable development goals of the agenda 2030 for the whole world, this is indeed a sea change, I think, that we see here, and, step-by-step, it will be implemented.

One can remain more sure-footed by taking small steps, but perhaps achieve greater speed by taking bigger steps. Of course, one also runs the risk of setting out in a completely erroneous direction. Surely the important thing isn't the length of our steps, but that the objective is clear.

If I run a time-limited test program, I'll never discover whether markets with additional employment truly exist. A solution in the low-wage sector cannot be a limited special program.

I'm very grateful that Barack Obama as president very much put protection of privacy on the agenda today, due to the fact of Islamist terrorism all over the world.

If you've worked together with somebody very well, leave-taking is very difficult. But we are all politicians. We all know that democracy lives off change. So, in the United States of America, the Constitution has very clear stipulations on this. It's a tough rule. Eight years and that's it, out goes the president and a new one comes in.