Artikel 18

1. Where a State has a strong interest in not applying this Convention to a specific matter, that State may declare that it will not apply the Convention to that matter. The State making such a declaration shall ensure that the declaration is no broader than necessary and that the specific matter excluded is clearly and precisely defined.
2. With regard to that matter, the Convention shall not apply –
a) in the Contracting State that made the declaration;
b) in other Contracting States, where recognition or enforcement of a judgment given by a court of a Contracting State that made the declaration is sought.