Related Rule
Practice Relating to Rule 54. Attacks against Objects Indispensable to the Survival of the Civilian Population
Kenya’s LOAC Manual (1997) provides: “It is forbidden … to direct attacks at objects indispensable for the survival of the civilian population such as food-stuff, crops, livestock and drinking water.” 
Kenya, Law of Armed Conflict, Military Basic Course (ORS), 4 Précis, The School of Military Police, 1997, Précis No. 4, pp. 2 and 3.