That's when America soars, when we look out for one another and we take care of each other, when we root for one another's success, when we strive to do better and to be better than the generation that came before us and try to build something better for generations to come, that's why we do what we do. That's the whole point of public service.

Sometimes it may seem as if progress is stalled but what history of post-war Germany shows is that strength and determination and focus and adherence to the values that we care about will result in a better future for our children and our grandchildren.

[My kids] are, sweet, kind, funny, smart, respectful people, and they treat everybody with respect. That's not just the biases of a parent. We feel pretty good when we hear back from friends, cause they still have sleepovers and they go to other folks houses and when the parents say, oh you know, Malia, she's just so sweet, or Sasha helped to pick up the dishes.

I did not suggest that Iran is a democracy; just the opposite. I talked about it being a repressive theocracy. What I think is indisputable is that even within this repressive regime, the political leaders there - including the Supreme Leader - are sensitive to the concerns of the population within bounds.

We have not always been in sync on every issue in terms of our core values, in terms of her integrity, her truthfulness, her thoughtfulness, [Angela Merkel] doing her homework, knowing her facts, her commitment to looking out for the interests of the German people first, but recognizing that part of good leadership on behalf of the nation requires engaging the world as a whole, and participating effectively in multilaterally institutions, I think she's been outstanding.

I do believe that Chancellor Merkel and Germany are a lynchpin in protecting the basic tenets of a liberal, market-based democratic order that has created unprecedented prosperity and security for Europe, but also for the world.

The biggest challenge, I think, is always maintaining your moral compass.