**La Nébuleuse islamiste en Europe et en Algérie** examines the political and militant Islamist networks active in Algeria and across Europe during a period shaped by civil conflict, radicalization, migration, and state security concerns. Hassane Zerrouky investigates how Islamist movements developed links beyond national borders and how European governments, Algerian authorities, and transnational activists responded to the growing visibility of political Islam. The work situates terrorism and Islamic fundamentalism within broader debates about religion, politics, governance, and international security. Rather than treating these movements as isolated events, it presents them as part of a wider landscape of organizations, ideologies, and political pressures connecting North Africa and Europe. It is a relevant title for readers interested in modern Algerian politics, Islamist activism, counterterrorism policy, and the European dimensions of conflicts rooted in the Maghreb.