Соответствующая норма
Practice Relating to Rule 70. Weapons of a Nature to Cause Superfluous Injury or Unnecessary Suffering
Article 20 of the draft Additional Protocol II, prohibiting the use of weapons of a nature to cause superfluous injury or unnecessary suffering, was deleted at the last moment by the CDDH, without any plenary debate, as part of a general revision of the 1977 Additional Protocol II. During the amendment voting at this stage, Portugal stated that it voted in favour of the inclusion of Article 20 in the draft Additional Protocol II “because it regards the article as a fundamental humanitarian provision the adoption of which will not imperil the authority of States”. 
Portugal, Statement at the CDDH, Official Records, Vol. VII, CDDH/SR.51, 3 June 1977, p. 123.