Related Rule
Cook Islands
Practice Relating to Rule 14. Proportionality in Attack
The Geneva Conventions and Additional Protocols Act (2002) of the Cook Islands punishes “any person who in the Cook Islands or elsewhere commits, or aids or abets or procures the commission by another person of, a grave breach … of [the 1977 Additional Protocol I]”. 
Cook Islands, Geneva Conventions and Additional Protocols Act, 2002, Section 5(1).