Соответствующая норма
Belgium
Practice Relating to Rule 15. The Principle of Precautions in Attack
Section C. Feasibility of precautions in attack
Upon ratification of the 1977 Additional Protocol I, Belgium declared: “In view of the travaux préparatoires … ‘feasible precautions’ [are] those that can be taken in the circumstances prevailing at the moment, which include military considerations as much as humanitarian ones.” 
Belgium, Interpretative declarations made upon ratification of the 1977 Additional Protocol I, 20 May 1986, § 3.