This elective course builds on the Foundations of International Relations (POLS2017) and is designed to deepen the knowledge of the students regarding the general aspects of both war and peacebuilding looking at those issues from several angles, i.e. theoretical, legal and institutional. It provides students with the necessary conceptual tools and analytical skills, allowing students to understand the causes of military conflicts and to devise strategic peacebuilding plans to manage, transform and resolve conflicts as well as preventing their recurrence.