Arbitration — Procedure before arbitral tribunal — Written arguments — Parties restricted under Rules of Procedure of Tribunal to arguments contained in memorials and counter — memorials Whether restriction may be modified in the event of major change in factual situation occurring after ftling of pleadings Request for interim measures of protection — United Nations Tribunal for Libya. Rules of Procedure, Article 11.

Arbitration — Procedure — Competence — Requirement of existence of a dispute — Whether existence affected by continuing negotiations between the parties — Interim measures of protection — Principle upon which relief to be granted — United Nations Tribunal for Libya, Rules of Procedure, Articles 25 and 26.