Соответствующая норма
Ukraine
Practice Relating to Rule 55. Access for Humanitarian Relief to Civilians in Need
Section B. Impediment of humanitarian relief
Ukraine’s IHL Manual (2004) states: “Serious violations of international humanitarian law directed against people include: … limitation of access of the population to food and water”. 
Ukraine, Manual on the Application of IHL Rules, Ministry of Defence, 11 September 2004, § 1.8.5.