The one thing that I remember from all of my intelligence briefings and my dealings with the Russians is that when you deal with the Russians, you have to deal with them from strength, not from weakness.

The area of climate change has a dramatic impact on national security.

My experience is that the director of the FBI is particularly important to just how aggressive an investigation will be into an issue. And once you remove James Comey, it creates a vacuum at the top. And the fundamental issue will be whether or not there is support at the highest levels within the FBI to continue to conduct that investigation. That's going to be the question mark.

I want you and the people of Israel to know a few things that have not and will not change. The United States stands firmly with Israel, and we have a rock solid commitment to the security of Israel and to the security of its citizens.

The terrorism from 9/11 has metastasized. It's metastasized in Iraq and Syria, in Nigeria, in Somalia, in Yemen and in other places in North Africa. We need a very comprehensive strategy to deal with that threat.

If you're a terrorist, you're a terrorist.

Today, I think the attitude is that governing is not necessarily good politics, and the result is that it's much more partisan and much more divided.