I wonder, sometimes, whether men and women in fact are capable of learning from history--whether we progress from one stage to the next in an upward course or whether we just ride the cycles of boom and bust, war and peace, ascent and decline.

Now let's make two things clear: ISIL is not 'Islamic.' No religion condones the killing of innocents, and the vast majority of ISIL's victims have been Muslim. And ISIL is certainly not a state. It was formerly al Qaeda's affiliate in Iraq, and has taken advantage of sectarian strife and Syria's civil war to gain territory on both sides of the Iraq-Syrian border. It is recognized by no government, nor the people it subjugates. ISIL is a terrorist organization, pure and simple. And it has no vision other than the slaughter of all who stand in its way.

Contrary to the claims of some of my critics and some of the editorial pages, I am an ardent believer in the free market.

As the United States begins a new chapter in our relationship with Cuba, we hope it will create an environment that improves the lives of the Cuban people, not because it is imposed by us, the United States, but through the talent and ingenuity and aspirations, and the conversations among Cubans from all walks of life so they can decide what the best course is for their prosperity.

Despite all the noise and hullabaloo - military cooperation, intelligence cooperation, all of that has continued. We have defended them consistently in every imaginable way. But I also believe that both for our national interests and Israel's national interests that allowing an ongoing conflict between Israelis and Palestinians that could get worse and worse over time is a problem. And that settlements contribute.

There's so much active misinformation and it's packaged very well and it looks the same when you see it on a Facebook page or you turn on your television. If everything seems to be the same and no distinctions are made, then we won't know what to protect.

Our goal is to have a country that's not divided by race. And my impression, as I travel around the country, is that that's the kind of country that most people want, as well, and that we all have prejudice, we all have certain suspicions or stereotypes about people who are different from us, whether it's religious or racial or ethnic, but what I think I found in the American people, I think there's a core decency there, where if they take the time, if they get the time to know individuals, then they want to judge those individuals by their character.