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The Report of the Iraq Inquiry
to bring them to book. By contrast, conventional weapons are cheaper, easier to
procure, and offer equal or greater effectiveness against traditional targets …”46
94.  In the context of reports of fissile material being available on the black market, the
JIC concluded in April 1994 that it was:
“… extremely unlikely that a terrorist group could produce even a crude nuclear
device; nor is there any evidence that any group has contemplated the use of
nuclear weapons. A more plausible scenario might be the dispersal of radioactive
materials …
“We believe that terrorists would not be able to acquire or deploy a nuclear weapon;
radiological attacks are … unlikely.”47
95.  The Assessment also stated:
“Attacks involving chemical or biological agents are also unlikely …”
96.  In an Assessment in July 1996, responding to a G7 declaration that special attention
should be paid to the threat of the use of nuclear, biological and chemical materials for
terrorist purposes, the JIC stated:
“There is no indication of any terrorist or other group showing interest in the use
of nuclear, biological or chemical (NBC) materials against the UK. For a number
of reasons, conventional weapons are likely to remain more attractive for terrorist
purposes. But last year’s nerve agent attack in Tokyo [the use of sarin by the
Aum Shinrikyo sect in the Tokyo underground in March 1995] will have heightened
interest and, with ever more NBC information publicly available, hoaxes threatening
NBC use are likely to become more difficult to assess.”48
97.  After Usama Bin Laden returned to Afghanistan, evidence accumulated of his
interest in chemical and biological materials.
98.  Usama Bin Laden had first become known as a high-profile supporter of Islamist
extremism when fighting the Soviet forces in Afghanistan in the 1980s.49
99.  He founded the international terrorist group known as Al Qaida in 1989, “dedicated
to opposing ‘un-Islamic’ governments in Muslim countries with force and violence”. He
was based in Afghanistan and Pakistan from 1989 to 1991, when he moved to Sudan.
Usama Bin Laden returned to Afghanistan in 1996.
46  Review of Intelligence on Weapons of Mass Destruction [“The Butler Report”], 14 July 2004, HC 898,
paragraph 113.
47  Review of Intelligence on Weapons of Mass Destruction [“The Butler Report”], 14 July 2004, HC 898,
paragraph 114.
48  Review of Intelligence on Weapons of Mass Destruction [“The Butler Report”], 14 July 2004, HC 898,
paragraph 116.
49  Review of Intelligence on Weapons of Mass Destruction [“The Butler Report”], 14 July 2004, HC 898,
paragraph 117.
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