Part 3
Matters of justification or excuse
Insanity
23 Insanity
(1) Every one shall be presumed to be sane at the time of doing or omitting any act until the contrary is proved.
(2) No person shall be convicted of an offence by reason of an act done or omitted by him when labouring under natural imbecility or disease of the mind to such an extent as to render him incapable—
(a) of understanding the nature and quality of the act or omission; or
(b) of knowing that the act or omission was morally wrong, having regard to the commonly accepted standards of right and wrong.
(3) Insanity before or after the time when he did or omitted the act, and insane delusions, though only partial, may be evidence that the offender was, at the time when he did or omitted the act, in such a condition of mind as to render him irresponsible for the act or omission.
(4) The fact that by virtue of this section any person has not been or is not liable to be convicted of an offence shall not affect the question whether any other person who is alleged to be a party to that offence is guilty of that offence.
PART 2 - INTERNATIONAL CRIMES AND OFFENCES AGAINST ADMINISTRATION OF JUSTICE
General principles of criminal law
12.
General principles of criminal law—
(1)For the purposes of proceedings for an offence against section 9 or section 10 or section 11,—
(a)the following provisions of the Statute apply, with any necessary modifications:
(ix)article 31 (which specifies grounds for excluding criminal responsibility):
1. In addition to other grounds for excluding criminal responsibility provided for in this Statute, a person shall not be criminally responsible if, at the time of that person's conduct:
(a) The person suffers from a mental disease or defect that destroys that person's capacity to appreciate the unlawfulness or nature of his or her conduct, or capacity to control his or her conduct to conform to the requirements of law;
(b) The person is in a state of intoxication that destroys that person's capacity to appreciate the unlawfulness or nature of his or her conduct, or capacity to control his or her conduct to conform to the requirements of law, unless the person has become voluntarily intoxicated under such circumstances that the person knew, or disregarded the risk, that, as a result of the intoxication, he or she was likely to engage in conduct constituting a crime within the jurisdiction of the Court;
(c) The person acts reasonably to defend himself or herself or another person or, in the case of war crimes, property which is essential for the survival of the person or another person or property which is essential for accomplishing a military mission, against an imminent and unlawful use of force in a manner proportionate to the degree of danger to the person or the other person or property protected. The fact that the person was involved in a defensive operation conducted by forces shall not in itself constitute a ground for excluding criminal responsibility under this subparagraph;
(d) The conduct which is alleged to constitute a crime within the jurisdiction of the Court has been caused by duress resulting from a threat of imminent death or of continuing or imminent serious bodily harm against that person or another person, and the person acts necessarily and reasonably to avoid this threat, provided that the person does not intend to cause a greater harm than the one sought to be avoided. Such a threat may either be:
(i) Made by other persons; or
(ii) Constituted by other circumstances beyond that person's control.