Claims — Nationality of claims — Global claims settlement — Austria-Italy Property Compensation Treaty, 1971 — Global payment to Austria — Austrian legislation implementing Treaty imposing stricter requirements regarding nationality of claimants than those contained in the Treaty — Requirement that original claimant or successor in title possess Austrian nationality at date of Treaty — Whether constitutional — Constitutional principle of equality of treatment

Relationship of international law and municipal law — Treaties — Implementing legislation — Whether implementing legislation may be more restrictive than Treaty

Treaties — Effect of municipal legislation — Implementing legislation imposing requirements not contained in Treaty — The law of Austria