Practice Relating to Rule 140. The Principle of Reciprocity
Spain’s LOAC Manual (1996) notes: “International treaties and agreements are made up of imperative norms of law … They do not lose their validity because one of the opposing parties does not respect them.”
Spain’s LOAC Manual (2007) states:
International treaties and conventions lay down peremptory norms from which no derogation is permitted, unless the treaty or convention in question provides for exceptions. Furthermore, the binding force of a treaty is not lessened by the failure of one of the parties to comply with it or by widespread or repeated non-compliance.