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The Report of the Iraq Inquiry
106.  In July 1999, the JIC changed one of the key assumptions underpinning previous
assessments, concluding that some terrorists were no longer reluctant to cause
mass casualties:
“Over the 1990s there has been a significant increase in the quantity and quality
of intelligence that some terrorists are interested in CBRN – and particularly in
chemical and biological materials – as weapons. The risk of a CBRN terrorist
incident has risen, albeit from a low base. In part this increase reflects the rise
of Islamic extremism and ethnic hatred as terrorist motivations: some of the
terrorists … are less constrained by considerations such as public support,
casualties among innocent bystanders, and the prospect of retaliation. It may
also reflect the increasing availability of information about making and using CB
materials … [S]ociety’s vulnerability to terrorist attack from CB or radiological
materials is high, exacerbated by the lack of a tried and tested CB counter-terrorist
response in some countries.”54
107.  In addition, the JIC assessed that Usama Bin Laden had successfully acquired
non-conventional weapons:
“… It has become clear that Usama Bin Laden has been seeking CBRN materials …
His wealth permits him to fund procurement, training and experimentation to an
extent unmatched by other terrorists … Given the quantity and quality of intelligence
about his interests in CB materials, the length of time he has sought them, and the
relative ease with which they can be made, we assess that he has by now acquired
or made at least modest quantities of CB materials – even if their exact nature and
effectiveness are unclear. The significance of his possession of CB materials is
that, in contrast to other terrorists interested in CB, he wishes to target US, British
and other interests worldwide. There is also intelligence on training in the use of
chemicals as weapons in a terrorist camp in Afghanistan, although it is not yet clear
if this is under Bin Laden’s auspices … Bin Laden’s attacks remain more likely to
employ conventional weapons than CB materials.”55
108.  The JIC retained its conclusion that:
“… the indications of terrorist interest in CBRN materials have yet to be matched by
a comparable amount of evidence about possession and intent to use CBRN. Most
terrorists continue to favour conventional weapons, as easier to use, more reliable,
safer and more controllable than CBRN materials.”56
54  Review of Intelligence on Weapons of Mass Destruction [“The Butler Report”], 14 July 2004, HC 898,
paragraph 119.
55  Review of Intelligence on Weapons of Mass Destruction [“The Butler Report”], 14 July 2004, HC 898,
paragraph 120.
56  Review of Intelligence on Weapons of Mass Destruction [“The Butler Report”], 14 July 2004, HC 898,
paragraph 121.
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