Enrique García Riaza is Professor in Ancient History at the Department of Historical Sciences and Theory of the Arts, University of the Balearic Islands (Spain). He completed his Degree in History (speciality of Ancient History) at the University of Salamanca (1991), as well as the 'Grado de Salamanca' on Roman History (1992). He defended his doctoral thesis in 1997 (University of the Balearic Islands) later published as a book: Celtíberos y lusitanos frente a Roma: diplomacia y derecho de guerra (Universidad del País Vasco, Vitoria, 2002). His main research interests are Diplomacy and Law of War during the Roman expansion. Principal Investigator of the Research Group Civitas (University of the Balearic Islands). He has taken part in several scientific programs, being a Principal Researcher in several R + D + i projects (Spanish State Research Agency, Government of Spain)