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.

I think Republicans now are recognizing that [Obamacare cancellation] may not be what the American people, including even [Donald] Trump voters, are looking for. And my hope is that the president-elect, members of Congress from both parties look at, "Where have we objectively made progress, where things are working better?" Don't undo things just because I did them. I don't have pride of authorship.

I think there are hard-liners inside of Iran that think it is the right thing to do to oppose us, to seek to destroy Israel, to cause havoc in places like Syria or Yemen or Lebanon, if they don't change at all, we're still better off having the deal.

I believe that if we stop talking at one another and start talking with one another, we can get a lot done.

While we may not live to see the full realization of our ambition, we will have the satisfaction of knowing that the world we leave to our children will be better off for what we did.

Become a teacher. Your country needs you.

I've made it clear for years that the threat from Iran is grave.