Related Rule
Practice Relating to Rule 54. Attacks against Objects Indispensable to the Survival of the Civilian Population
Section C. Attacks in case of military necessity
Ukraine’s IHL Manual (2004) states that, during the conduct of hostilities: “In exceptional circumstances … the commander (commanding officer) may designate … missions to destroy objects indispensable to the survival of the civilian population”. 
Ukraine, Manual on the Application of IHL Rules, Ministry of Defence, 11 September 2004, § 2.2.4.