Соответствующая норма
Practice Relating to Rule 7. The Principle of Distinction between Civilian Objects and Military Objectives
Section C. Attacks against civilian objects in general
On the basis of a military communiqué issued by Egypt during the 1973 Middle East conflict, the Report on the Practice of Egypt states that Egypt considers that civilian objects should be immune from attacks. The report also refers to a letter from the Counsel of the Egyptian President to the US Secretary of State condemning Israeli attacks on civilian objects. 
Report on the Practice of Egypt, 1997, Chapter 1.3, referring to Military Communiqué No. 63, 26 October 1973, and Letter from Hafez Ismail, Counsel to the Egyptian President, to Henry Kissinger, US Secretary of State, 11 October 1973.