Notwithstanding article 12, paragraphs 1 and 2, a State, on becoming a party to this Statute, may declare that, for a period of seven years after the entry into force of this Statute for the State concerned, it does not accept the jurisdiction of the Court with respect to the category of crimes referred to in article 8 when a crime is alleged to have been committed by its nationals or on its territory. A declaration under this article may be withdrawn at any time. The provisions of this article shall be reviewed at the Review Conference convened in accordance with article 123, paragraph 1.