Introduction: Security Challenges in the 21st CenturyMichael E. Brown Part I: Weapons, Technology, and Security 1. Technology and SecurityTimothy D. Hoyt 2. The Perils of Nuclear, Biological, and Chemical WeaponsBernard I. Finel, Brian D. Finlay, and Janne E. Nolan 3. The Proliferation of Conventional Weapons and TechnologiesJo L. Husbands 4. Information Technology and SecurityDorothy E. Denning 5. Emerging Technologies and SecurityLoren B. Thompson Part II: Non-Military Aspects of Security 6. Defense Economics and SecurityTheodore H. Moran 7. Energy and SecurityMartha Harris 8. Environmental Factors and SecurityJ.R. McNeill 9. Demographic Developments and SecurityCharles B. Keely 10. Security and Conflict in the Developing WorldTimothy D. Hoyt Part III: Transnational Actors and Security11. Transnational Mass Media Organizations and SecurityDiana Owen 12. Transnational Crime, Corruption, and SecurityRoy Godson 13. Transnational Terrorism and SecurityAudrey Kurth Cronin Conclusion 14. Security Problems and Security Policy in a Grave New WorldMichael E. Brown