NATO needs to adapt its strategy to meet new challenges

Europe can only hold together and stand together, which is very important in times of migration challenges, terrorism challenges, if each country takes responsibility for itself.

We all want to be honest and draw lessons from the past, the WHO is the only international organization that has universal political legitimacy on global health issues. This is why it's so important to render its structures more efficient.

Freedom is the very essence of our economy and society. Without freedom the human mind is prevented from unleashing its creative force. But what is also clear is that this freedom does not stand alone. It is freedom in responsibility and freedom to exercise responsibility.

The Freedom Bell in Berlin is, like the Liberty Bell in Philadelphia, a symbol which reminds us that freedom does not come about of itself. It must be struggled for and then defended anew every day of our lives.

This conclusion of trade agreements that go beyond the scope of mere tariff agreements, customs agreements, are most important and I'm very pleased we were able to bring this to fruition between Canada and the E.U. We've made great progress, particularly if we look at one of the great global issues, namely climate protection, without the engagement of the current administration under the leadership of Barack Obama, this Paris agreement would never have come about.

Thank [Barack Obama] for the friendship you've always demonstrated.