State territory — International leases — Kouang Tcheou Wan — Franco — Chinese Convention of 1945 restoring territory to China — Electricity concession to French company — Whether French State liable for breach of contract — The law of France.

International law — Relation to municipal law — Effect of treaty upon concession — Whether cession of territory rendering performance of a concession impossible gives rise to action in municipal law — Act of State — The law of France.