Article 7. - Exemption from reciprocity 1. Except where this Convention contains more favourable provisions, a Contracting State shall accord to stateless persons the same treatment as is accorded to aliens generally. 2. After a period of three years' residence, all stateless persons shall enjoy exemption from legislative reciprocity in the territory of the Contracting States. 3. Each Contracting State shall continue to accord to stateless persons the rights and benefits to which they were already entitled, in the absence of reciprocity, at the date of entry into force of this Convention for that State. 4. The Contracting States shall consider favourably the possibility of according to stateless persons, in the absence of reciprocity, rights and benefits beyond those to which they are entitled according to paragraphs 2 and 3, and to extending exemption from reciprocity to stateless persons who do not fulfill the conditions provided for in paragraphs 2 and 3. 5. The provisions of paragraphs 2 and 3 apply both to the rights and benefits referred to in articles 13, 18, 19, 21 and 22 of this Convention and to rights and benefits for which this Convention does not provide. Article 8. - Exemption from exceptional measures With regard to exceptional measures which may be taken against the person, property or interests of nationals or former nationals of a foreign State, the Contracting States shall not apply such measures to a stateless person solely on account of his having previously possessed the nationality of the foreign State in question. Contracting States which, under their legislation, are prevented from applying the general principle expressed in this article shall, in appropriate cases, grant exemptions in favour of such stateless persons. Article 9. - Provisional measures Nothing in this Convention shall prevent a Contracting State, in time of war or other grave and exceptional circumstances, from taking provisionally measures which it considers to be essential to the national security in the case of a particular person, pending a determination by the Contracting State that that person is in fact a stateless person and that the continuance of such measures is necessary in his case in the interests of national security. 66