Related Rule
Islamic Republic of Iran
Practice Relating to Rule 14. Proportionality in Attack
Section A. General
In its written statement submitted to the ICJ in the Nuclear Weapons case in 1995, the Islamic Republic of Iran stated: “Some of the principles of humanitarian international law from which one can deduce the illegitimacy of the use of nuclear weapons are: … The existence of proportionality between military advantages gained and the used weapons and methods.” 
Islamic Republic of Iran, Written statement submitted to the ICJ, Nuclear Weapons case, 19 June 1995, p. 2; see also Written statement submitted to the ICJ, Nuclear Weapons (WHO) case, undated, pp. 1–2.