Rising sea levels, severe draughts, the melting of the polar caps, the more frequent and devastating natural disasters all raise demand for humanitarian assistance and disaster relief.

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

You don't deploy forces into harm's way without knowing what's going on.

I suddenly realized at the CIA that I had to make life-and-death decisions about people.

Iran is isolating itself from the rest of the world.

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.

We have throughout our history been tested when it comes to the institutions of our democracy. And thank God our forefathers were smart enough to establish a government of checks and balances to make sure that power cannot be centralized in any one branch of government. And those institutions have proven themselves.