Related Rule
Russian Federation
Practice Relating to Rule 7. The Principle of Distinction between Civilian Objects and Military Objectives
Section B. Attacks against military objectives
The Russian Federation’s Combat Manual (2005) states:
when carrying out an assigned mission, weapons should be used only against the adversary and its military objectives;
persons and objects entitled to protection under international humanitarian law may not be attacked, if these persons are not engaged in hostile actions, and the objects are not used (nor prepared to be used) for military purposes. 
Russian Federation, Combat Manual on the Preparation and Conducting of Combined-Arms Battles (Boevoi ustav po podgotovke i vedeniu obshevoiskovogo boya), Part 3, Platoon, Subdivision, Tank, endorsed by Order of the Commander-in-Chief of the Ground Forces No. 19, 24 February 2005, § 24.