IEDs

"Shampoo bottles, bicycle seats, tiffins. A plastic container or an LPG cylinder. A parcel of books. A clock, a teddy bear. In the Kashmir Valley, any one of these innocuous objects can be fatal. They are all commonly used by militants to fashion bombs and improvised explosive devices (IEDs). But the most lethal of all is the remote controlled explosive device, hidden in a ditch, a drainpipe or a parked vehicle."
- "Lethal Weapons", Indian Express Newspaper (Bombay), August 24, 2000
General
While terrorists will use conventional weapons, such as rocket-propelled grenades and assault rifles to achieve their goals, they also have the ability to assemble and employ a wide variety of lethal improvised explosive devices (IEDs). Explosives are a popular weapon with terrorists and are covered in the al Qaeda training manual. The manual states, "Explosives are believed to be the safest weapon for the Mujahideen. Using explosives allows them to get away from enemy personnel and to avoid being arrested." It goes on to say that, "In addition, explosives strike the enemy with sheer terror and fright." 183
IEDs are a common tool of terror used by non-state actors. These devices have been fabricated in an improvised manner and incorporate highly destructive lethal and dangerous explosives or incendiary chemicals, which are designed to kill or destroy the target. The materials required for these devices are often stolen or misappropriated from military or commercial blasting supplies, or made from fertilizer and other readily available household ingredients.184 IEDs basically include some type of explosive, fuse, detonators and wires,
shrapnel and pieces of metal, and a container to pack the explosives and shrapnel.
The use of IEDs by terrorists is a constant threat. Terrorist groups are continuously developing new techniques and tactics in response to defenses and countermeasures established by their opponents. They will disguise IEDs to hinder recognition and will often booby-trap the devices to detonate if disturbed.
The most simple of the IEDs used is the one initiated by closing of a battery circuit, similar to turning on a battery operated light. When turning on the switch closes the circuit, electricity flows to the light so it can be illuminated. As shown in Figure E-1, a clothespin- triggering device in this IED replaces the light switch and when it is activated, the electricity flows to the charge, thus detonating the explosive.
183 Ben N. Venzke and Aimee Ibrahim, Al Qaeda Tactic/Target Brief (Alexandria: IntelCenter/Tempest Publishing, 2002), 11.
184 Conventional Terrorist Weapons (New York: United Nations Office for Drug Control and Crime Prevention,
2002), 4; available from http://www.undcp.org/odccp/terrorism_weapons_conventional.html; Internet; accessed 12 November 2002.