Соответствующая норма
Italy
Practice Relating to Rule 146. Reprisals against Protected Persons
Section E. Civilians in general
Italy’s IHL Manual (1991) provides that reprisals cannot be directed against the civilian population, except in case of absolute necessity. However, providing for the prohibition of reprisals against, inter alia, protected civilian persons and protected persons, the manual also states: “The observance of international rules which expressly provide for the obligation to abide by them in any circumstances cannot be suspended by way of reprisals.” 
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, §§ 23 and 25.
Italy’s Combatant’s Manual (1998) instructs: “[D]o not engage in reprisals”. 
Italy, Manuale del Combattente, SME 1000/A/2, Stato Maggiore Esercito/Reparto Impiego delle Forze, Ufficio Dottrina, Addestramento e Regolamenti, 1998, § 250.
Italy’s Law of War Decree (1938), as amended in 1992, provides: “Respect for rules adopted in order to comply with international conventions which expressly exclude reprisals cannot be suspended.” 
Italy, Law of War Decree, 1938, as amended in 1992, Article 8.
Upon ratification of the 1977 Additional Protocol I, Italy stated:
Italy will react to serious and systematic violations by an enemy of the obligations imposed by Additional Protocol I and in particular its Articles 51 and 52 with all means admissible under international law in order to prevent any further violation. 
Italy, Declarations made upon ratification of the 1977 Additional Protocol I, 27 February 1986, § 10.