Соответствующая норма
Italy
Practice Relating to Rule 68. Precautions while Receiving Parlementaires
Section A. General
Italy’s IHL Manual (1991) provides: “The commander who receives [a parlementaire] shall take all required precautions to prevent him from acquiring information of military character.” Measures to prevent the presence of a parlementaire from being prejudicial can include blindfolding. 
Italy, Manuale di diritto umanitario, Introduzione e Volume I, Usi e convenzioni di Guerra, SMD-G-014, Stato Maggiore della Difesa, I Reparto, Ufficio Addestramento e Regolamenti, Rome, 1991, Vol. I, § 57.
Italy’s Law of War Decree (1938), as amended in 1992, states: “The commander who receives the parlementaire shall take all necessary measures to prevent him from acquiring information of military character.” 
Italy, Law of War Decree, 1938, as amended in 1992, Article 71.