Until the present day a large-scale terrorist attack carried out with weapons of mass destruction has not occurred, but it is often seen as (almost) inevitable and only a matter of time. This learning unit offers a sober discussion of the risks of chemical, biological, radiological, and nuclear (CBRN) terrorism in the 21st century.

After completing this unit, you will

• know a basic definition of terrorism.
• understand why there is increasing concern over CBRN terrorism.
• have knowledge on cases of attempted or realized acts of CBRN terrorism.
• be familiar with CBRN security concepts and measures.