While not positively stated in the Act, the possibility of renouncing Irish citizenship is provided to allow Irish citizens to be naturalised as citizens of foreign countries whose laws do not allow for multiple citizenship. The Minister of Justice "may" revoke the citizenship of a naturalised citizen if he or she voluntarily acquires the citizenship of another country (other than by marriage) after naturalisation but there is no provision requiring them to renounce any citizenship they previously held. Similarly, there is no provision of Irish law requiring citizens to renounce their Irish citizenship before becoming citizens of other countries.