Global Zero vid: They asked congressmen how many nuclear weapons remain in the U.S. arsenal. Most don't know or give wildly inaccurate guesses. Correct answer: 7700 nukes, costing $60 billion a year. As they note, Congress also can't explain why we need them or when we'd use them. Although U.S. still has first-use policy. And is only country to use them: See my book Atomic Cover-up.