During the Cold War, deterrence theory was the cornerstone of U.S. foreign policy. Following the 9/11 terrorist attacks, however, popular wisdom dictated that terrorist organizations and radical fanatics could not be deterred—and governments shifted their attention to combating terrorism rather than deterring it. This book challenges that prevailing assumption and offers insight as to when and where terrorism can be deterred. It first identifies how and where theories of deterrence apply to counterterrorism, highlighting how traditional and less-traditional notions of deterrence can be applied to evolving terrorist threats. It then applies these theoretical propositions to real-world threats to establish the role deterrence has within a dynamic counterterrorism strategy—and to identify how metrics can be created for measuring the success of terrorism deterrence strategies. In sum, it provides a foundation for developing effective counterterrorism policies to help states contain or curtail the terrorism challenges they face.

This book examines the question of how to deter a non-state terrorist actor. Can terrorism be deterred? This book argues that current research is unable to find strong cases of deterrence success, because it uses a flawed research design which does not capture the longitudinal dynamics of the process. So far, the focus of inquiry has been on the tactical elements of a state’s counterterrorism strategy, instead of the non-state actor’s grand strategies. By studying the campaigns of Hezbollah, the Palestinians, the Irish Republican Army, Chechens, the Kurdistan Workers' Party, and Al-Qaeda/Taliban and ISIS over time, we can see that deterrence strategies that target the cost-benefit calculus of terrorist organizations lead to wars of attrition – which is the non-state organization’s strategy for victory. To escape the attrition trap, the state must undermine the attrition strategy of terrorist organizations by using offensive campaigns that become critical educational moments. The case studies presented here uncover an evolutionary process of learning, leading to strategic deterrence successes. Some terrorist organizations abandoned the use of force altogether, while others abandoned their aspirational goals or resorted to lower levels of violence. These findings should enable policymakers to transition from the failed policy that sought to defeat the Taliban and al-Qaeda in the unending war in Afghanistan to a policy that successfully applies deterrence. This book will be of much interest to students of deterrence theory, terrorism studies, war and conflict studies, and security studies.

It may not be possible to deter fanatical terrorists, but members of terrorist systems may be amenable to influence. The U.S. counterterrorism strategy should therefore include political warfare, placing at risk things the terrorists hold dear, a credible threat of force against states or groups that support acquisition of weapons of mass destruction, and maintaining cooperation with other nations engaged in the war on terror, while also preserving core American values.

This innovative new book aims to put society's fight against terrorism into a comprehensive crime prevention perspective with a clear, understandable theoretical foundation, developing a general model for the prevention of crime which is, in this book, applied to terrorism.

Cold War-era strategic thinking was driven by the belief that individuals, organizations, and foreign states could be deterred from offensive action by the threat of reprisal. That assurance was shaken with the terrorist attacks of September 11, 2001; suddenly, it seemed that no threat was powerful enough to deter individuals or organizations that valued political objectives over their own lives and the lives of their members. More than a decade later, new research and theory are bringing deterrence back into currency as a viable counterterrorism strategy. Alex S. Wilner updates deterrence theory for conflict in the twenty-first century, arguing for its value against challengers such as rogue states, cyber warriors, and transnational terrorist organizations. Deterring Rational Fanatics provides a full-scale discussion of deterrence theory concepts and controversies, assessing the utility of relying on the logic of deterrence and coercion to counter contemporary terrorism. In particular, targeted killings directed against the Taliban of Afghanistan provide a vivid illustration of the impact deterrence can have on militant behavior: precision strikes that eliminate militant leaders represent a significant cost to planning and participating in political violence, a cost that can coerce, manipulate, and alter behavior. Though deterrence theory is not a panacea for terrorism, insurgency, or militancy, it can serve as a strategic guide for state responses; as Wilner shows, terrorist violence can indeed be deterred.

This monograph summarizes the findings of a six-month project on deterrence of terrorism conducted jointly by RAND and the Institute for Defense Analyses (IDA). This study was initiated by a request to develop a framework for deterring terrorism. It was subsequently broadened to address, which greatly increased the operating space for our research, allowing us to consider measures ranging from co-optation to full-scale military attacks executed to deter future terrorist attacks (by al Qaeda or by others). This broadening of the problem also reflected a lesson gleaned from reviewing historical experience with terrorism: Successful strategies to combat terrorism spawned by serious, deep-rooted problems have involved first crushing the current threat and then bringing about changes to make terrorism's reemergence less likely. Thus, although concepts such as co-optation and inducement are not effective for dealing with terrorists who have the unshakable commitment of a bin Laden, they do apply to others that the United States must try to influence.

This innovative new book aims to put society's fight against terrorism into a comprehensive crime prevention perspective with a clear, understandable theoretical foundation, developing a general model for the prevention of crime which is, in this book, applied to terrorism.