Police on Alert As Chlorine Hits Iraq, New York Sun, 05-01-07

'Dirty bomb' plotter appeals 40 year term, Telegraph, 4-05-07

Al-Qaeda's WMD Strategy After the U.S. Intervention in Afghanistan, By Robert Wesley, Global Terrorism Analysis, 10-21-05

Al-Qaeda's WMD Strategy Prior to the U.S. Intervention in Afghanistan, By Robert Wesley, Global Terrorism Analysis, 10-7-05

Chart: Al-Qa'ida's WMD Activities, By Weapons of Mass Destruction Terrorism Research Program, Center for Nonproliferation Studies

CHEMICAL:

Small-scale Terrorist Attacks Using Chemical and Biological Agents: An Assessment Framework and Preliminary Comparisons, Congressional Research Service

Chemical Attack: Warfare Agents, Industrial Chemicals, and Toxins, News & Terrorism

Al Qaeda's Mad Scientist: The Significance of Abu Khabab's Death, By Dan Darling, Daily Standard, 1-19-06

Responding to Chemical Attacks, Terrorism: Questions and Answers

BIOLOGICAL:

Bioterrorist 12 Step Program, Bulletin of the Atomic Scientists

Biological Attack: Human Pathogens, Biotoxins, and Agricultural Threats, News & Terrorism

The Threat of Biological Attack: Why Concern Now?, By David W. Siegrist, Emerging Infectious Diseases, July-August 1999

Responding to Biological Attacks, Terrorism: Questions and Answers

Biological Agents and Their Implications

RADIOLOGICAL:

Radiological Attack: Dirty Bombs and Other Devices, News & Terrorism

Responding to Radiation Attacks, Terrorism: Questions and Answers

Fact Sheet on Dirty Bombs, U.S. Nuclear Regulatory Commission, March 2003

Health Agencies Prepare for Radiological Attacks, U.S Medicine, July 2002

Cops Seize Smuggled Uranium, News24.com, 08-16-05

The Facts About "Dirty Bombs", By Kathleen Meister and P. Andrew Karam, American Council on Science and Health

Terrorist "Dirty Bombs": A Brief Primer, By Jonathan Medalia, CRS Report for Congress

NUCLEAR:

Border Security: Investigators Successfully Transported Radioactive Sources Across Our Nation's Borders at Selected Locations, U.S. Government Accountability Office, 03-28-06

Nuclear Attack, News & Terrorism

Responding to Nuclear Attacks, Terrorism: Questions and Answers

How Real is Threat of Terrorists Using Weapons of Mass Destruction?, By Charles J. Hanley, The Austin American-Statesman, 11-13-05

Quarantine: Historical Lessons Learned