Disputes — International Court of Justice — Contentious jurisdiction — Competence — Declarations under Article 36 of Statute — Declaration in form of renewal of acceptance of jurisdiction of Permanent Court of International Justice — Renewal made after lapse of original declaration — Application of Article 36 (5) of Statute — State not a Member of United Nations before dissolution of Permanent Court — Renewal considered as new declaration — Formal requirements for valid acceptance of jurisdiction — Interpretation of declaration — Natural and ordinary meaning — Effect of intention to accept jurisdiction of International Court of Justice — Whether intention nullified by non-existence of Permanent Court at date of renewal of declaration.