[43]
According to the 1977 Protocol II, “objects indispensable to the survival of the civilian population” are protected and attacks against them are prohibited.[3]
The Rome Statute of the International Criminal Court includes starvation as a war crime when committed within an international armed conflict.
WIKIPEDIA
STARVATION (CRIME)
ARTICLE 14, PROTOCOL ADDITIONAL TO THE GENEVA CONVENTIONS OF 12 AUGUST 1949, AND RELATING TO THE PROTECTION OF VICTIMS OF NON-INTERNATIONAL ARMED CONFLICTS (PROTOCOL II), OF 8 JUNE 1977
Article 14 — Protection of objects indispensable to the survival of the civilian population Starvation of civilians as a method of combat is prohibited. It is therefore prohibited to attack, destroy, remove or render useless, for that purpose, objects indispensable to the survival of the civilian population, such as foodstuffs, agricultural areas
for the production of foodstuffs, crops, livestock, drinking water installations and supplies and irrigation works.
https://www.un.org/en/