This was the moment when the rise of the oceans began to slow and our planet began to heal.

I do have an obligation to make sure that I am following some of the rules. I can't simply ignore laws that are out there.

To resolve this issue will require Iran to come to the table and discuss in a clear and forthright way how to prove to the international community that the intentions of their nuclear program are peaceful. [...] The question is going to be whether in these discussions they show themselves moving clearly in that direction.

If we're trying to protect the American public, we should not put in place a travel ban.

Angela [Merkel] and I also agreed the need for a comprehensive and humane response to the devastating humanitarian crisis in Syria and for the influx of migrants and refugees from around the world. We need to build on the progress achieved at the U.N. Refugee Summit, which yielded new commitments from some 50 nations and organizations.

In the campaign back in 2007, 2008, people would say, "Oh, he's being naïve. He thinks that there's no red states and blue states. And wait 'til he gets here." And I will confess that, I didn't fully appreciate the ways in which individual senators or members of Congress now are pushed to the extremes by their voter bases. I did not expect, particularly in the midst of crisis, just how severe that partisanship would be.

I think that the Democratic Party is a big tent, which means that there are positions I may not agree with.