Règle correspondante
Sweden
Practice Relating to Rule 12. Definition of Indiscriminate Attacks
Section C. Attacks whose effects cannot be limited as required by international humanitarian law
Sweden’s IHL Manual (1991) states: “According to Article 51, paragraph 4, [of the 1977 Additional Protocol I,] indiscriminate attacks are: … c. those which employ a method or means of combat the effects of which cannot be limited as required by this Protocol.” 
Sweden, International Humanitarian Law in Armed Conflict, with reference to the Swedish Total Defence System, Swedish Ministry of Defence, January 1991, Section 3.2.1.5, p. 45.