This paper deals with the losses in human life terrorists have been able to inflict. It then places the issue in broader context, comparing the risk terrorism presents with other hazards to human life that have variously been considered acceptable or unacceptable. Under present conditions terrorism, as a hazard to human life in the United States, the United Kingdom, Canada, and Australia the risks from terrorism are low enough to be deemed “acceptable.” The paper then discusses which items of key infrastructure are worth protecting based on cost-benefit analyses or other decision support criteria.
First International Conference of Protective Structures. Proceedings of the First International Conference of Protective Structures (Manchester, UK 29 September - 1 October, 2010)