Norma relacionada
Peru
Practice Relating to Rule 54. Attacks against Objects Indispensable to the Survival of the Civilian Population
Section B. Attacks against objects used to sustain or support the adverse party
Peru’s IHL Manual (2004) states:
Objects indispensable to the survival of the civilian population are no longer protected when:
(a) the adverse party uses them as sustenance solely for the members of its armed forces;
(b) the adverse party uses them in direct support of military action (under no circumstances must the civilian population be left without adequate supplies of food or water, forcing it to move). 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 27.d.(3).(a) and (b).
Peru’s IHL and Human Rights Manual (2010) states:
Objects indispensable to the survival of the civilian population are no longer protected when:
(a) They are solely used for the members of its armed forces.
(b) They are used in direct support of military action (under no circumstances must the civilian population be left without adequate supplies of food or water, forcing it to move). 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 28(d)(3)(a)–(b), p. 238.