Related Rule
New Zealand
Practice Relating to Rule 12. Definition of Indiscriminate Attacks
Section B. Attacks which cannot be directed at a specific military objective
New Zealand’s Military Manual (1993) states: “Indiscriminate attacks are prohibited. Indiscriminate attacks are: … (b) those which employ a method or means which cannot be directed at a specific military objective.” 
New Zealand, Interim Law of Armed Conflict Manual, DM 112, New Zealand Defence Force, Headquarters, Directorate of Legal Services, Wellington, November 1992, § 517; see also § 509(4).