Part I: Foreign Fighters, Radicalization and Jihadist Terrorism as a Challenge for the EU 1. Psychosocial evidence-based approach to radicalization and terrorism, Humberto Trujillo & Manuel Moyano 2. Urban jihad: New operational trends affecting Salafist jihadist groups in Europe, Africa and the Middle East, Carlos Echeverr?a Jes?s 3. The European Unions foreign 'terrorist' fightersInmaculada, Marrero Rocha 4. Urban environments vulnerable to jihadist radicalization. A study of two Spanish cities in North Africa, Luis de la Corte Ib??ez Part II: Legal and Political Responses to the Challenges of Radicalization and Recruitment of Jihadists and Foreign Fighters 5. From classic terrorism to jihadist terrorism. The evolution of the type of prisoners linked to jihadism in Spain, Salvador Berd?n Carri?n 6.The European Security Agenda in the fight against terrorism, Jos? Luis del Castro Ruano 7. The rule of law and the fight against terrorism and radicalization in the European Union, Pablo Mart?n Rodr?guez 8. National measures implementing United Nations resolutions on foreign fighters, Antonio Segura-Serrano 9. The compatibility of the Additional Protocol on Foreign Terrorist Fighters with international human rights law, Francesco Seatzu 10. Preventing and countering Islamic radicalization in prison through restorative justice, Florentino Ruiz Yamuza Part III: Functional Responses to the Challenges of Radicalization and Recruitment of Jihadists and Foreign Fighters 11. Towards the study and prevention of the recruitment of jihadists in Europe: A comprehensive psychosocial proposal, Humberto M. Trujillo and Manuel Moyano 12.l#