V. THE DECISIONS OF THE ITALIAN COURTS DECLARING ENFORCEABLE IN ITALY DECISIONS OF GREEK COURTS UPHOLDING CIVIL CLAIMS AGAINST GERMANY
127. The relevant question, from the Court’s point of view and for the purposes of the present case, is whether the Italian courts did themselves respect Germany’s immunity from jurisdiction in allowing the application for exequatur, and not whether the Greek court having rendered the judgment of which exequatur is sought had respected Germany’s jurisdictional immunity. In a situation of this kind, the replies to these two questions may not necessarily be the same; it is only the first question which the Court needs to address here.
128. Where a court is seised, as in the present case, of an application for exequatur of a foreign judgment against a third State, it is itself being called upon to exercise its jurisdiction in respect of the third State in question. It is true that the purpose of exequatur proceedings is not to decide on the merits of a dispute, but simply to render an existing judgment enforceable on the territory of a State other than that of the court which ruled on the merits. It is thus not the role of the exequatur court to re-examine in all its aspects the substance of the case which has been decided. The fact nonetheless remains that, in granting or refusing exequatur, the court exercises a jurisdictional power which results in the foreign judgment being given effects corresponding to those of a judgment rendered on the merits in the requested State. The proceedings brought before that court must therefore be regarded as being conducted against the third State which was the subject of the foreign judgment.
129. ... When applied to exequatur proceedings, that definition means that such proceedings must be regarded as being directed against the State which was the subject of the foreign judgment....
130. It follows from the foregoing that the court seised of an application for exequatur of a foreign judgment rendered against a third State has to ask itself whether the respondent State enjoys immunity from jurisdiction — having regard to the nature of the case in which that judgment was given — before the courts of the State in which exequatur proceedings have been instituted. In other words, it has to ask itself whether, in the event that it had itself been seised of the merits of a dispute identical to that which was the subject of the foreign judgment, it would have been obliged under international law to accord immunity to the respondent State.
131. In light of this reasoning, it follows that the Italian courts which declared enforceable in Italy the decisions of Greek courts rendered against Germany have violated the latter’s immunity.
132. ... The Court will confine itself to noting, in general terms, that it may perfectly well happen, in certain circumstances, that the judgment rendered on the merits did not violate the jurisdictional immunity of the respondent State, for example because the latter had waived its immunity before the courts hearing the case on the merits, but that the exequatur proceedings instituted in another State are barred by the respondent’s immunity....
136. ... that responsibility is automatically inferred from the finding that certain obligations have been violated.
137. ... According to general international law on the responsibility of States for internationally wrongful acts, as expressed in this respect by Article 30 (a) of the International Law Commission’s Articles on the subject, the State responsible for an internationally wrongful act is under an obligation to cease that act, if it is continuing. Furthermore, even if the act in question has ended, the State responsible is under an obligation to re-establish, by way of reparation, the situation which existed before the wrongful act was committed, provided that re-establishment is not materially impossible and that it does not involve a burden for that State out of all proportion to the benefit deriving from restitution instead of compensation. This rule is reflected in Article 35 of the International Law Commission’s Articles.
138. ... As the Court has stated in previous cases (see, in particular, Dispute regarding Navigational and Related Rights (Costa Rica v. Nicaragua), Judgment, I.C.J. Reports 2009, p. 267, para. 150), as a general rule, there is no reason to suppose that a State whose act or conduct has been declared wrongful by the Court will repeat that act or conduct in the future, since its good faith must be presumed. Accordingly, while the Court may order the State responsible for an internationally wrongful act to offer assurances of non-repetition to the injured State, or to take specific measures to ensure that the wrongful act is not repeated, it may only do so when there are special circumstances which justify this, which the Court must assess on a case-by-case basis.
139. For these reasons,
THE COURT,
Finds that the Italian Republic has violated its obligation to respect the immunity which the Federal Republic of Germany enjoys under international law by allowing civil claims to be brought against it based on violations of international humanitarian law committed by the German Reich between 1943 and 1945;
Finds that the Italian Republic has violated its obligation to respect the immunity which the Federal Republic of Germany enjoys under international law by taking measures of constraint against Villa Vigoni;
Finds that the Italian Republic has violated its obligation to respect the immunity which the Federal Republic of Germany enjoys under international law by declaring enforceable in Italy decisions of Greek courts based on violations of international humanitarian law committed in Greece by the German Reich;
Finds that the Italian Republic must, by enacting appropriate legislation, or by resorting to other methods of its choosing, ensure that the decisions of its courts and those of other judicial authorities infringing the immunity which the Federal Republic of Germany enjoys under international law cease to have effect.