Related Rule
France
Practice Relating to Rule 53. Starvation as a Method of Warfare
France’s LOAC Summary Note (1992) states: “It is prohibited to use starvation as a method of warfare against civilian persons.” 
France, Fiche de Synthèse sur les Règles Applicables dans les Conflits Armés, Note No. 432/DEF/EMA/OL.2/NP, Général de Corps d’Armée Voinot (pour l’Amiral Lanxade, Chef d’Etat-major des Armées), 1992, § 4.2.
France’s LOAC Manual (2001) states: “It is prohibited to use starvation against civilians as a method of warfare.” 
France, Manuel de droit des conflits armés, Ministère de la Défense, Direction des Affaires Juridiques, Sous-Direction du droit international humanitaire et du droit européen, Bureau du droit des conflits armés, 2001, p. 30; see also p. 85.
The manual further states that the recourse to starvation as a method of warfare may constitute a war crime. 
France, Manuel de droit des conflits armés, Ministère de la Défense, Direction des Affaires Juridiques, Sous-Direction du droit international humanitaire et du droit européen, Bureau du droit des conflits armés, 2001, p. 85.
France’s Penal Code (1992), as amended in 2010, states in its section on war crimes related to international armed conflict: “Using the starvation of civilians as a method of warfare, by depriving them of objects indispensable for their survival … is punishable by life imprisonment.” 
France, Penal Code, 1992, as amended in 2010, Article 461-25.
At the CDDH, the representative of France stated:
All Article 27 [now Article 14 of the 1977 Additional Protocol II] contained was a purely humanitarian provision, which no one should oppose … His delegation would vote for the article, whose importance was borne out by many examples in history. 
France, Statement at the CDDH, Official Records, Vol. VII, CDDH/SR.52, 6 June 1977, p. 137, § 86.
France’s LOAC Manual (2001), under the definition of siege, states: “The starvation of civilian populations as a method of warfare is prohibited.” 
France, Manuel de droit des conflits armés, Ministère de la Défense, Direction des Affaires Juridiques, Sous-Direction du droit international humanitaire et du droit européen, Bureau du droit des conflits armés, 2001, p. 117.
France’s LOAC Manual (2001) states that when carrying out a blockade, there is an obligation “to allow free passage for relief indispensable to the survival of the civilian population”. 
France, Manuel de droit des conflits armés, Ministère de la Défense, Direction des Affaires Juridiques, Sous-Direction du droit international humanitaire et du droit européen, Bureau du droit des conflits armés, 2001, p. 33.