The UK is an extraordinary partner for America and a force for good in an unstable world. I hope it remains strong, robust and united.

Mandela's commitment to democracy was ratified not only by his election, but by his willingness to step down from power

The question we ask today is not whether our government is too big or too small, but whether government works.

As I travel around the world, it's fascinating; European leaders, Asian leaders, they all say to me, America is actually poised to be the world leader for another century - if we can fix some of this political dysfunction. ... We've got a lot of national security challenges, but if we get our economy together, and if we can get our political system to work well, I am really confident about our future.

One of the best parts of the holiday season is spending time with the special people in your life.

There are very few moments in our lives where we have the privilege to witness history taking place. This is one of those moments. This is one of those times.

Non-Islamic, non-foreign-motivated terrorist actions have killed at least as many Americans on American soil as those who were promoted by jihadists. But what we have also seen is ISIL evolve, because of the sophistication of their social media, to a point where they may be inspiring more attacks - even if they're self-initiated, even if they don't involve complex planning - than we would have seen some time ago.