Economics, trade and finance — Export licencing system — Arms sales — Legislative ban on arms sales prejudicing “the interests of the international legal order” — Proposed sale of materials used in the manufacture of munitions to third State — Withholding of export licence by exporting State on ground that munitions would be re-exported from third State to belligerent State — Whether sale of materials to third State having a prejudicial effect on the interests of the international legal order — Whether interests of international economic order outweighed by necessity to maintain freedom of international trade

War and armed conflict — Effect of war — On private contracts — Agreement by corporation in exporting State to supply materials for use in manufacture of munitions to corporation in third State — Exporting State refusing to grant export licence on grounds that munitions would be re-exported to a belligerent State — The law of the Netherlands