Non-retroactivity

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Rome Statute

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.

States with implementing provisions

StateProvisions
Afghanistan [1] [2] [3]
Albania [1] [2]
Andorra [1] [2]
Angola [1] [2]
Antigua and Barbuda [1] [2]
Armenia [1] [2] [3] [4] [5]
Azerbaijan [1] [2] [3]
Bangladesh [1]
Barbados [1]
Belize [1]
Benin [1]
Bosnia and Herzegovina [1]
Botswana [1]
Brazil [1]
Bulgaria [1]
Cabo Verde [1] [2] [3]
Cambodia [1]
Canada [1] [2] [3] [4] [5] [6]
Colombia [1]
Cook Islands [1]
Costa Rica [1]
Croatia [1] [2] [3] [4]
Cyprus [1]
Czech Republic [1]
Denmark [1]
Ecuador [1]
Estonia [1] [2] [3]
Ethiopia [1] [2]
Fiji [1]
Finland [1]
France [1] [2]
Gambia [1]
Georgia [1] [2]
Germany [1] [2] [3]
Ghana [1] [2]
Greece [1]
Grenada [1]
Guyana [1]
Hungary [1] [2]
Iceland [1] [2] [3]
Indonesia [1] [2]
Ireland [1]
Japan [1]
Kazakhstan [1] [2] [3]
Kenya [1]
Kiribati [1]
Korea, Republic of [1]
Kyrgyzstan [1] [2] [3] [4]
Latvia [1]
Lesotho [1] [2]
Liberia [1]
Lithuania [1] [2]
Malawi [1]
Maldives [1]
Malta [1]
Marshall Islands [1] [2]
Mauritius [1]
Mexico [1]
Moldova, Republic of [1] [2] [3]
Mongolia [1] [2]
Montenegro [1] [2]
Namibia [1]
Nauru [1]
Netherlands [1]
New Zealand [1] [2] [3]
Nigeria [1] [2] [3]
Norway [1] [2]
Papua New Guinea [1] [2]
Philippines [1] [2]
Poland [1] [2] [3]
Portugal [1] [2]
Romania [1] [2] [3]
Russian Federation [1] [2]
Saint Kitts and Nevis [1]
Saint Lucia [1]
Saint Vincent and the Grenadines [1]
Samoa [1] [2] [3]
Serbia [1] [2] [3]
Seychelles [1]
Slovakia [1] [2]
Slovenia [1] [2] [3]
South Africa [1]
Spain [1]
Sudan [1]
Switzerland [1]
Tajikistan [1] [2] [3]
The former Yugoslav Republic of Macedonia [1] [2] [3]
Timor-Leste [1] [2] [3]
Trinidad and Tobago [1]
Turkey [1] [2]
Uganda [1] [2]
Ukraine [1] [2]
United Kingdom of Great Britain and Northern Ireland [1]
Uzbekistan [1] [2]
Venezuela, Bolivarian Republic of [1]
Viet Nam [1]