"Today, the US spends less on defense as a percentage of our economy than we did at any time since he Japanese attack on Pearl Harbor. For the world's only superpower, that is an invitation to very serious trouble."

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We've gotten a long way on missile defense. We know how to do it. We know how to take down incoming warheads, but we need to do a lot more work in order to be - to deploy a system that'll defend the United States against those kinds of limited strikes that might be possible by a nuclear armed North Korea or Iran.

— Dick Cheney