Part II – International Crimes and Offences Against The Administration of Justice

General Principles of Criminal Law

19. General principles of criminal law.
(1) For the purposes of proceedings for an offence against section 7 or section 8 or section 9 –

(a) the following provisions of the Statute apply, with any necessary modifications –

(iii) article 24(2) (which relates to the effect of changes in the law);

Article 11
Jurisdiction ratione temporis
2. If a State becomes a Party to this Statute after its entry into force, the Court may exercise its jurisdiction only with respect to crimes committed after the entry into force of this Statute for that State, unless that State has made a declaration under article 12, paragraph 3.

Article 24
Non-retroactivity ratione personae
1. No person shall be criminally responsible under this Statute for conduct prior to the entry into force of the Statute.
2. In the event of a change in the law applicable to a given case prior to a final judgement, the law more favourable to the person being investigated, prosecuted or convicted shall apply.