Related Rule
New Zealand
Practice Relating to Rule 22. The Principle of Precautions against the Effects of Attacks
New Zealand’s Military Manual (1992) states:
The Parties to the conflict shall, to the maximum extent feasible, … take the other necessary precautions to protect the civilian population, individual civilians and civilian objects under their control against the dangers resulting from military operations. 
New Zealand, Interim Law of Armed Conflict Manual, DM 112, New Zealand Defence Force, Headquarters, Directorate of Legal Services, Wellington, November 1992, § 519(1)(c).