Norma relacionada
Peru
Practice Relating to Rule 54. Attacks against Objects Indispensable to the Survival of the Civilian Population
Section C. Attacks in case of military necessity
Peru’s IHL Manual (2004) states:
Objects indispensable to the survival of the civilian population are no longer protected when:
(c) they are required by imperative military necessity to defend the national territory against invasion. 
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).(c).
Peru’s IHL and Human Rights Manual (2010) states:
Objects indispensable to the survival of the civilian population are no longer protected when:
(c) They are imperatively required for the military defence against the invasion of the national territory. 
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)(c), p. 238.