Related Rule
Argentina
Practice Relating to Rule 22. The Principle of Precautions against the Effects of Attacks
Argentina’s Law of War Manual (1989) states:
The parties to the conflict shall, to the extent possible, take the other necessary precautions to protect the civilian population, individual civilians and civilian objects under their control against the dangers resulting from military operations. 
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, § 4.07(2).