UN General Assembly
1964

10. Peace must rest on the enduring foundation, laid down by our international Organization, of the supremacy of law, applicable to great, medium-sized and small States as the unbreakable rule for their conduct and the chart of their course. No State can ever again arbitrarily invent its own law within the international order, or claim privileges on the grounds of superior armed might, for the law stems from the general conviction of States enshrined in written or customary rules, to whose authority each and every State must bow as an earnest of its will to ensure joint respect for international law.