Just like Sept. 11, only with nuclear weapons this time, that's the threat. I think that is the threat. I think it's just facing reality. It's not a happy reality, but it's reality and if you don't deal with it, it will become even more unpleasant.

There's no doubt that Iran funds and supplies Hamas with weapons.

We need a strong and effective State Department. We can't conduct American affairs in the world without it.

Swapping Bergdahl for illegal enemy combatants (terrorists, in common parlance) signaled unmistakably to Taliban and al Qaeda that Obama is determined to withdraw from Afghanistan no matter what the cost to the United States or those in Afghanistan fighting to remain free.

I think the regime in North Korea is more fragile than people think. The country's economic system remains desperate, and one thing that could happen for example would be under a new government in South Korea, to get the South Korean government to live up to its own constitution, which says any Korean who makes it to South Korea, is a Korean citizen. A citizen of the Republic of Korea. And you could imagine the impact that would have inside North Korea if people thought, "If I could get out and make it to South Korea, I could have a different life."

It was right to overthrow Saddam Hussein. It was the regime itself that was a threat. I think in hindsight, what I would have done is turn authority back over to Iraqis much more quickly and say: "Your country, you figure out how to run it."

Iran has essentially mastered all of the complex science and technology that they need to have a completely indigenous nuclear weapons program. That means that our options on Iran are extremely limited, to regime change or as a last resort, the use of force.