State responsibility — Claims — Nationality of — Defence of dual nationality for purposes of Treaty of Peace with Italy — Dominance of Italian nationality.

Nationality — Dual nationality — Defence of, for purposes of Treaty of Peace with Italy — Dominance of Italian nationality.

Disputes — Arbitration — By Conciliation Commission — Evidence — Sufficiency of — Generalities and self-serving declaration — Burden of proof — Establishing “treatment as enemy” — Clear and convincing proof.