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I will not, nor will I ever, publicly divulge sensitive intelligence sources and methods. For when that happens, our national security is endangered and lives can be lost.

In order to be successful against each of these threats, we have to have a presence overseas, work closely not only with our counterparts in the law enforcement community, but also with the intelligence community.

You can't get closer to the heart of national sovereignty than national security and intelligence services.

You know, as director of the CIA, I got an awful lot of intelligence about all the horrible things that could go on across the world.

We can't allow the world's worst leaders to blackmail, threaten, hold freedom-loving nations hostage with the world's worst weapons.

All of our intelligence agencies, our Department of Defense, are all working to meet this threat. But it's a fast moving world; it's a place where offense is easier than defense, and keeping up with the next innovation in cyber-warfare is an enormous challenge.

You want to keep intelligence separate from policy.

I can't in good conscience allow the U.S. government to destroy privacy, internet freedom and basic liberties for people around the world with this massive surveillance machine they're secretly building.

Without - you know, good intelligence stops plots against the homeland. Without that intelligence, we cannot effectively stop it.

In international affairs, you never threaten things you're not prepared to do.