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Acknowledgments --Preface -- pt. 1. Real and metaphorical "war" -- ch. 1. Terrorism after September 11 -- ch. 2. Does it help to define our dangers from terrorism as "war"? -- pt. 2. What can be done to reduce the threat? -- ch. 3. Protection against unidentified terrorists -- ch. 4. Intelligence -- pt. 3. Recognizing the costs of the steps we take -- ch. 5. Civil liberties -- ch. 6. Building the future internationally -- pt. 4. Organizing for the necessary decisions -- ch. 7. The problem of drifting into an "intelligence state" -- ch. 8. 8. Values and security -- Notes -- Index -- About the Belfer Center for Science and International Affairs.