Related Rule
Argentina
Practice Relating to Rule 161. International Cooperation in Criminal Proceedings
Section A. Cooperation between States
Argentina’s Law of War Manual (1989), referring to Article 88 of the 1977 Additional Protocol I, states: “The contracting parties shall afford one another the greatest measure of assistance in connection with criminal proceedings brought in respect of grave breaches of the [1949 Geneva] Conventions and of [the 1977 Additional Protocol I].” 
Argentina, Leyes de Guerra, PC-08-01, Público, Edición 1989, Estado Mayor Conjunto de las Fuerzas Armadas, aprobado por Resolución No. 489/89 del Ministerio de Defensa, 23 April 1990, § 8.08.
Argentina’s Law on International Cooperation on Criminal Matters (1997) stipulates that “Argentina shall do its utmost to assist in the investigation, conviction and punishment” of crimes corresponding to the jurisdiction of any State requesting such assistance, and shall act “most diligently” in such procedures. As regards the investigation and conviction of such crimes, the Law provides that “assistance shall be provided even if the act in question is not a crime in Argentina”, although under such circumstances there would be some exceptions to the types of assistance provided. 
Argentina, Law on International Cooperation on Criminal Matters, 1997, Articles 1 and 67.