Norma relacionada
Peru
Practice Relating to Rule 161. International Cooperation in Criminal Proceedings
Section A. Cooperation between States
Peru’s IHL Manual (2004) states: “[The parties to the conflict] must provide mutual assistance and cooperate in the repression of grave breaches of international humanitarian law.” 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 101.c.
Peru’s IHL and Human Rights Manual (2010) states: “[The parties to the conflict] must provide mutual assistance and cooperate in the repression of grave breaches of international humanitarian law.” 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 92(c), p. 294.