Foreign policy success or failure is often attributed to the role of leadership. This volume explores the relationship between President George W. Bush's leadership, the administration's stated belief in the power of ideas (and the ideas of power) and its approach to the war on terror. Drawing on the international expertise of ten American foreign policy and security specialists, this incisive and timely book combines theoretical perspectives on political leadership with rigorous empirical analysis of selected aspects of the Bush administration's post 9/11 foreign policy. As a result, this book sheds considerable light not just on the limited impact of President Bush's war on terror strategy, but also, more importantly, on why key ideas underpinning the strategy, such as US global primacy and pre-emptive war, largely failed to gel in a globalizing world.