Related Rule
Practice Relating to Rule 17. Choice of Means and Methods of Warfare
In 2007, in the Constitutional Case No. C-291/07, the Plenary Chamber of Colombia’s Constitutional Court stated:
The precautionary principle is the cornerstone of a number of specific rules which are all considered to have attained customary status and to be applicable in internal armed conflicts … Among these rules is … the obligation of the parties to a conflict to take all feasible precautions in the choice of means and methods of warfare with a view to avoiding, and in any event to minimizing, incidental loss of civilian life, injury to civilians and damage to civilian objects. 
Colombia, Constitutional Court, Constitutional Case No. C-291/07, Judgment of 25 April 2007, p. 99.
[footnote in original omitted]