More lenient law
Article 34
Criminal and other punishable acts are stipulated and the punishments for them are pronounced in accordance with the law in force at the time when the act was committed, unless the new law is more favorable for the perpetrator.
Article 133
(1) A criminal offender shall be subject to the law in force at the time of commission of the criminal offence.
(2) Where a law is amended once or several times after the commission of a criminal offence, the law which is most favourable to the perpetrator shall be applied.
(3) A perpetrator of a criminal offence qualified by a law which has a limited time of application shall be subject to that law, irrespective of when he is being tried, unless otherwise laid down by that law.
(4) Security measures and correctional measures prescribed by the new law may be applied to an offender, provided that they are not less favourable to him than those that could have been applied under the law in force at the time of commission of the criminal offence.
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.
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.