(b) Such recruitment is carried out with the informed consent of the person's parents or legal guardians; (c) Such persons are fully informed of the duties involved in such military service; (d) Such persons provide reliable proof of age prior to acceptance into national military service. 4. Each State Party may strengthen its declaration at any time by notification to that effect addressed to the Secretary-General of the United Nations, who shall inform all States Parties. Such notification shall take effect on the date on which it is received by the Secretary-General. 5. The requirement to raise the age in paragraph 1 of the present article does not apply to schools operated by or under the control of the armed forces of the States Parties, in keeping with articles 28 and 29 of the Convention on the Rights of the Child. Article 4 1. Armed groups that are distinct from the armed forces of a State should not, under any circumstances, recruit or use in hostilities persons under the age of 18 years. 2. States Parties shall take all feasible measures to prevent such recruitment and use, including the adoption of legal measures necessary to prohibit and criminalize such practices. 3. The application of the present article shall not affect the legal status of any party to an armed conflict. Article 5 Nothing in the present Protocol shall be construed as precluding provisions in the law of a State Party or in international instruments and international humanitarian law that are more conducive to the realization of the rights of the child. Article 6 1. Each State Party shall take all necessary legal, administrative and other measures to ensure the effective implementation and enforcement of the provisions of the present Protocol within its jurisdiction. 2. States Parties undertake to make the principles and provisions of the present Protocol widely known and promoted by appropriate means, to adults and children alike. 3. States Parties shall take all feasible measures to ensure that persons within their jurisdiction recruited or used in hostilities contrary to the present Protocol are demobilized or otherwise released from service. States Parties shall, when necessary, accord to such persons all appropriate assistance for their physical and psychological recovery and their social reintegration. Article 7 1. States Parties shall cooperate in the implementation of the present Protocol, including in the prevention of any activity contrary thereto and in the rehabilitation and social reintegration of persons who are victims of acts contrary thereto, including through technical cooperation and financial assistance. Such assistance and cooperation will be undertaken in consultation with the States Parties concerned and the relevant international organizations. 2. States Parties in a position to do so shall provide such assistance through existing multilateral, bilateral or other programmes or, inter alia, through a voluntary fund established in accordance with the rules of the General Assembly. Article 8