Those of us in positions of responsibility, we'll need to be less concerned with the judgment of special interests and well-connected donors, and more concerned with the judgment of posterity.

Through words he gave voice to the voiceless. Through deeds he gave courage to the faint of heart.

One of the things I advised Donald Trump to do was to make sure that, before he commits to certain courses of action, he has really dug in and thought through how various issues play themselves out.

Our lives are now in a telephone, all our data, all our finances, all our personal information, and so it's proper that we have some constraints on that. But it's not going to be 100 percent. If it is 100 percent, then we're not going to be able to protect ourselves and our societies from some people who are trying to hurt us.

Basically, I am a night owl. My wife is an early bird, so she goes to bed around 9:30, and my kids are in bed about 8. So, if I am home, I will usually start writing about 9:30 and go till about 12:30 or 1:30, depending on what my energy level is.

As Iraqi forces continue the liberation of Mosul, I'm pleased that NATO will be meeting the commitment we made in Warsaw to begin training additional forces in Iraq.

To those leaders around the globe who seek to sow conflict, or blame their society's ills on the West - know that your people will judge you on what you can build, not what you destroy.