Book excerpt: Twenty years after the outbreak of the threat posed by international jihadist terrorism, which triggered the need for democracies to balance fundamental rights and security needs, 9/11 and the Rise of Global Anti-Terrorism Law offers an overview of counter-terrorism and of the interplay among the main actors involved in the field since 2001. This book aims to give a picture of the complex and evolving interaction between the international, regional and domestic levels in framing counter-terrorism law and policies. Targeting scholars, researchers and students of international, comparative and constitutional law, it is a valuable resource to understand the theoretical and practical issues arising from the interaction of several levels in counter-terrorism measures. It also provides an in-depth analysis of the role of the United Nations Security Council.