Dirty Bombs: Factsheet from the US Nuclear Regulatory Commission on the impact and likely response to a radiological attack.
Dirty Bombs: Response to a Threat: Transcript of the testimony of Henry Kelly to the Senate Foreign Relations Committee on the threat of radiological attack by terrorist groups.
Electro-magnetic Pulse (EMP) Systems: Discusses the effects and spread of EMP weapons, which can jam or render useless an enemy's communication infrastructure.
How a 'Dirty' Bomb Works: Interactive feature from USA Today describing the workings of a "dirty bomb".
Howstuffworks: "How Dirty Bombs Work": Explains how a radiological bomb works and what effect it might have.
Misuse of Microwave Weapons by Criminals and Terrorists: Describes the lethality of microwave weapons. With references and sources.
Radiological Weapons: Portal to current news articles on radiological weapons.
Radiological Weapons - Iraq Special Weapons: Article from the Federation of American Scientists on the attempts by Iraq to build radiological weapons.
Radiological Weapons as a Means of Attack: Report from the Center for Strategic and International Studies on the threat and potential use of radiological "dirty" bombs. [In Adobe PDF format]