Abstract
When a great thinker of the Spanish Golden Age, such as Vitoria, Molina or Suárez, inquires about the fundamental cause which justifies a licit declaration of war, “injury” is included as one of these causes. Here, “injury” is understood as an infringement of a right, an injustice committed and for which restitution has not been made. Among the injuries which may licitly be considered a justification for war, there is the “insult to honor”, especially to the honor of the Nation and the honor of the Sovereign. The difficulty in accepting this justification for war lies in making a demarcation between the interest of the Sovereign and the interest of the People, i.e. the men who make up the community, who are the immediate depositaries of power. For these thinkers, honor is always owed to the People. This is because a State, a Nation, a People, has the right to enjoy respect for its institutions, laws and customs, as an integral part of its own life