The ‘new terrorism’ is said to be more networked, ad hoc, lethal and dangerous than the old. This assessment of these claims concludes that terrorism currently differs little from its previous manifestations, except for the somewhat increased likelihood that a chemical, biological, nuclear or radiological weapon might be used by terrorists. This does not necessarily mean that terrorism is more dangerous than it was. The critical factor in assessing the threat posed by terrorism is whether it is used strategically.Approved for public release; distribution is unlimited