RADIOLOGICAL • FREE TRANSLATOR.ORG • Definition of Radiological

... destruction pose a direct and serious threat to the United States and the entire international community. The probability of a terrorist organization using a chemical, biological, radiological, or nuclear weapon, or high-yield explosives, has increased significantly during the past decade. The availability of critical technologies, the willingness of some scientists and others to cooperate with terrorists, and the ease of intercontinental ...

— National Strategy for Combating Terrorism - February 2003 • United States