Related Rule
Ukraine
Practice Relating to Rule 55. Access for Humanitarian Relief to Civilians in Need
Ukraine’s IHL Manual (2004) states:
Non-governmental organizations shall be allowed to perform their functions as to the victims of armed conflicts. Upon consent of the State Party they shall be allowed to perform humanitarian operations to provide relief for the civilian population. 
Ukraine, Manual on the Application of IHL Rules, Ministry of Defence, 11 September 2004, § 1.4.16.
The manual further states: “In case of military necessity the actions of such personnel [“personnel engaged in humanitarian actions”] can be temporarily limited”. 
Ukraine, Manual on the Application of IHL Rules, Ministry of Defence, 11 September 2004, § 1.2.42; see also § 1.2.33.
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.