القاعدة ذات الصلة
Colombia
Practice Relating to Rule 71. Weapons That Are by Nature Indiscriminate
Colombia’s Basic Military Manual (1995) states that the use of weapons which “cause unnecessary and indiscriminate, extensive, lasting and serious damage to people and the environment” is prohibited. 
Colombia, Derecho Internacional Humanitario – Manual Básico para las Personerías y las Fuerzas Armadas de Colombia, Ministerio de Defensa Nacional, 1995, pp. 49–50; see also p. 30.
Colombia’s Operational Law Manual (2009) states:
3. Fundamental guarantees and IHL principles
One of the main expressions of customary international humanitarian law are the fundamental guarantees. In this respect, the Constitutional Court has listed the following as fundamental guarantees:
(4) the prohibition of indisctiminate attacks and of weapons that have indiscriminate effects;
4. Rules for the conduct of hostilities
c. Restrictions on the means and methods
The means and methods of warfare that can be used are limited. Weapons that cause superfluous injury or unnecessary suffering are prohibited. The general principles on the use of weapons establish that “the use of means and methods of warfare which are of a nature to cause superfluous injury or unnecessary suffering is prohibited”. Likewise, “the use of weapons which are by nature indiscriminate is prohibited”. 
Colombia, Manual de Derecho Operacional Manual FF.MM. 3-41 Público, Primera Edición 2009, Comando General de las Fuerzas Militares, aprobado por el Comandante General de las Fuerzas Armadas por Disposición Número 056, 7 December 2009, pp. 36–37, 40 and 53–54.
[footnotes in original omitted]
In 2007, in the Constitutional Case No. C-291/07, the Plenary Chamber of Colombia’s Constitutional Court stated:
The principle of distinction is complex and encompasses a number of treaty and customary norms applicable in internal armed conflicts, in addition to, in many cases, enjoying ius cogens status. These rules [include] … the prohibition against … the use of weapons that have indiscriminate effects. 
Colombia, Constitutional Court, Constitutional Case No. C-291/07, Judgment of 25 April 2007, pp. 84–86; see also pp. 94 and 95.