القاعدة ذات الصلة
Mexico
Practice Relating to Rule 15. The Principle of Precautions in Attack
Section B. Avoidance or minimization of incidental damage
Mexico’s IHL Guidelines (2009) states: “The parties to a conflict must cause the least possible damage to the civilian population and the cities, towns and villages in which they live.” 
Mexico, Cartilla de Derecho Internacional Humanitario, Ministry of National Defence, 2009, § 10.
In a section entitled “Basic rules of conduct in armed conflict”, the Guidelines also states:
The following rules must be observed by combatants when engaged in military operations:
b. Attack objectives as required to fulfil your mission, causing the least possible harm to civilians and the least possible damage to civilian objects. 
Mexico, Cartilla de Derecho Internacional Humanitario, Ministry of National Defence, 2009, § 14(b).