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The Report of the Iraq Inquiry
What is an Improvised Explosive Device (IED)?
An IED is a bomb constructed and activated in ways other than through conventional
military action. The types most commonly encountered in Iraq were:
Radio‑Controlled IED (RCIED): This uses a radio signal to initiate detonation – a number
of different commercial devices were used in Iraq such as doorbells, burglar alarms and
radio‑controlled cars.61 Radio‑controlled detonation meant that an explosion on a specific
target could be initiated by an operator situated a safe distance away. Those were the
most commonly used type of IED in Iraq between 2003 and mid‑2005. UK electronic
countermeasures were used to jam the detonation signal.
Command Wire IED (CWIED): This uses a wire to transmit the signal to detonate.62 It is
a retrograde form of technology and had the disadvantage of requiring a wire dug into the
ground, or concealment through other means, but they became more common in Iraq from
2006 onwards as they were immune to any form of electronic countermeasure.
Explosively Formed Projectile (EFP): A directional charge designed to defeat armour
by using the energy of the explosive to create a projectile that travels at between one and
three kilometres per second towards its target.63 EFPs were commonly used as charges
for IEDs in Iraq from mid‑2004 onwards.
Passive Infrared IED (PIR IED): An evolution from RCIEDs where passive infrared
beams are used remotely to detonate IEDs. The first of those attacks in MND(SE) was in
May 2005 and indicated an attempt to circumvent the UK’s electronic countermeasures.
135.  On 2 July 2003, the JIC issued an Assessment about potential flashpoints in Iraq
over the next two to three years.64 It focused on “potential negative outcomes rather
than positive ones”.
136.  The JIC judged that extremist groups currently posed a direct threat to Coalition
Forces, but:
“For now, the activities of these groups are largely unco‑ordinated. However, it is
likely that the links between groups will become stronger.”
137.  The Assessment stated that there had been no sign of an organised campaign
of violence against Coalition Forces by Shia groups “so far”. There had, however,
been reports that the two main armed Shia groups (the Badr Corps and the followers
of Muqtada al‑Sadr) had “recently been trying to acquire large quantities of weapons”.
The JIC stated that there were indications that they were “preparing for intra‑Shia conflict
(as opposed to anti‑Coalition activity)”. That would add to instability and it was “probable”
that Coalition Forces would “be caught up in violence”.
61  Paper DIS, September 2003, ‘An Analysis of the Major IED Threats to Coalition Forces in Iraq’.
62  Paper DIS, 1 October 2004, ‘The Command Wire Improvised Explosive Device Threat to UK Forces
in Iraq’.
63  Paper DIS, May 2006, ‘The EFP Threat in MND(SE)’.
64  JIC Assessment, 2 July 2003, ‘Iraq: Potential Flashpoints’.
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