Norma relacionada
Practice Relating to Rule 7. The Principle of Distinction between Civilian Objects and Military Objectives
Section D. Attacks against places of civilian concentration, including schools
The Philippines’ AFP Standing Rules of Engagement (2005) state:
8. General Rules for the Correct Use of Force towards Mission Accomplishment
g. … civilian population centers … shall be protected and shall not be attacked except when they are used for military purposes. 
Philippines, AFP Standing Rules of Engagement, Armed Forces of the Philippines, General Headquarters, Office of the Chief of Staff, 1 December 2005, § 8(g).