This book begins with an account of the evolution of improvised explosive devices using a number of micro case studies to explore how and why actors have initiated IED campaigns; how new and old technologies and expertise have been exploited and how ethical barriers to IED development and deployment have been dealt with. It proceeds to bring the evidence from the case studies together to identify themes and trends in IED development, before looking at what can realistically be done to mitigate the threat of IEDs in the new wars of the twenty first century. The book suggests that the advance and availability of a combination of technological factors, in conjunction with changes in the nature of contemporary conflicts, have led to the emergence of IEDs as the paradigmatic weapons of new wars. However their prevalence in contemporary and future conflicts is not inevitable, but rather depends on the willingness of multiple sets of actors at different levels to build a web of preventative measures to mitigate – if not eradicate – IED development and deployment.

Attacks in London, Madrid, Bali, Oklahoma City and other places indicate that improvised explosive devices (IEDs) are among the weapons of choice of terrorists throughout the world. Scientists and engineers have developed various technologies that have been used to counter individual IED attacks, but events in Iraq and elsewhere indicate that the effectiveness of IEDs as weapons of asymmetric warfare remains. The Office of Naval Research has asked The National Research Council to examine the current state of knowledge and practice in the prevention, detection, and mitigation of the effects of IEDs and make recommendations for avenues of research toward the goal of making these devices an ineffective tool of asymmetric warfare. The book includes recommendations such as identifying the most important and most vulnerable elements in the chain of events leading up to an IED attack, determining how resources can be controlled in order to prevent the construction of IEDs, new analytical methods and data modeling to predict the ever-changing behavior of insurgents/terrorists, a deeper understanding of social divisions in societies, enhanced capabilities for persistent surveillance, and improved IED detection capabilities.

Countering the threat of improvised explosive devices (IED)s is a challenging, multilayered problem. The IED itself is just the most publicly visible part of an underlying campaign of violence, the IED threat chain. Improving the technical ability to detect the device is a primary objective, but understanding of the goals of the adversary; its sources of materiel, personnel, and money; the sociopolitical environment in which it operates; and other factors, such as the cultural mores that it must observe or override for support, may also be critical for impeding or halting the effective use of IEDs. Disrupting Improvised Explosive Device Terror Campaigns focuses on the human dimension of terror campaigns and also on improving the ability to predict these activities using collected and interpreted data from a variety of sources. A follow-up to the 2007 book, Countering the Threat of Improvised Explosive Devices: Basic Research Opportunities, this book summarizes two workshops held in 2008.

Improvised explosive devices (IEDs) are a type of unconventional explosive weapon that can be deployed in a variety of ways, and can cause loss of life, injury, and property damage in both military and civilian environments. Terrorists, violent extremists, and criminals often choose IEDs because the ingredients, components, and instructions required to make IEDs are highly accessible. In many cases, precursor chemicals enable this criminal use of IEDs because they are used in the manufacture of homemade explosives (HMEs), which are often used as a component of IEDs. Many precursor chemicals are frequently used in industrial manufacturing and may be available as commercial products for personal use. Guides for making HMEs and instructions for constructing IEDs are widely available and can be easily found on the internet. Other countries restrict access to precursor chemicals in an effort to reduce the opportunity for HMEs to be used in IEDs. Although IED attacks have been less frequent in the United States than in other countries, IEDs remain a persistent domestic threat. Restricting access to precursor chemicals might contribute to reducing the threat of IED attacks and in turn prevent potentially devastating bombings, save lives, and reduce financial impacts. Reducing the Threat of Improvised Explosive Device Attacks by Restricting Access to Explosive Precursor Chemicals prioritizes precursor chemicals that can be used to make HMEs and analyzes the movement of those chemicals through United States commercial supply chains and identifies potential vulnerabilities. This report examines current United States and international regulation of the chemicals, and compares the economic, security, and other tradeoffs among potential control strategies.

This book collects lectures of an international NATO-Russian Advanced Research Workshop on Detection and Disposal of Improvised Explosives (IE) used by terrorists. The disposal of IE is especially dangerous, because they are often much more unstable and mechanically more sensitive than commercial or military explosives. This text covers detection of explosives by different analytical methods and the different shape and compositions of the explosive charge, and offers up-to-date advice on handling and disposal.

Introduction -- Operational surprise and response -- The contemporary IED experience -- Data sources -- U.S. experience in Iraq -- The U.S. response -- Recognition -- Institutional response -- Organizational -- Equipment -- Vehicles -- Electronic countermeasures -- Training and doctrine -- Research and development -- Industrial -- Funding -- Policy -- Summary assessment -- The Australian experience in Iraq -- The Australian response -- Recognition -- Institutional response -- Organizational -- Equipment -- Training and doctrine -- Research and development -- Industrial -- Funding -- Policy -- Comparative analysis of responses -- Leadership changes -- National interests and equities -- Adequacy of existing capabilities -- Countervailing assessments -- Conventional thinking -- Adequate agility -- Flexible force structure -- Other considerations -- Failure to anticipate and the risk of overreaction -- The focusing power of casualties -- Subsequent experience - Afghanistan -- Conclusions.