1. Introduction A. Overview B. Relevant Treaty Law 2. Treaty Interpretation: History and Background A. Pre-Vienna Convention Treaty Interpretation Rules B. Development of the Convention Rules C. Criticism of the Convention Rules D. Customary Status and FIAT Use of the Convention Rules E. Interpretation and Application Distinguished F. Who May Interpret Treaties? G. What May be Interpreted by the Convention Rules? 3. The General Rule of Treaty Interpretation A. Introduction B. Article 31(1) C. Article 31(2) D. Article 31(3) E. Article 31(4) 4. Supplementary Means of Interpretation A. Article 32 B. Preparatory Work C. Circumstances of a Treaty's Conclusion D. Confirming a Meaning E. Determining a Meaning 5. Non-Codified Means of Interpretation A. Introduction B. Use of Prior Awards and Decisions C. Treaties, Instruments, or Materials D. Scholarly Opinion E. Inter-Temporal Aspects F. Principle of Effectiveness G. Legal Maxims 6. Interpretation Jurisprudence Particular to Investment Arbitration A. The AAP Rules B. Failure to Apply Convention Rules C. Unilateral Declarations Consenting to Investment Arbitration D. Umbrella Clauses E. Most Favoured Nation Clauses F. Disclosure of Preparatory Work G. Pro-Investor Bias in Interpreting Investment Treaties? H. Restrictive Interpretation I. Pre-Arbitration Waiting Period J. Interpreting Silence 7. Conclusion A. Conclusions on FIAT Treaty Interpretation Practice B. Suitability of Convention Rules for Investor-State Disputes C. Contribution of FIAT Practice to Internation Law APPENDICES I. Analytical Tables of FIAT Treaty Interpretation Practice II. Comparison between Articles 27-29 of the 1966 ILC Draft and Articles 31-33 of the Vienna Convention III. Comparative Table of Draft Treaty Interpretation Rules IV. Umbrella Clause Comparative Table V. Selected ICJ Decisions Confirming Customary Status of the Convention Rules VI. Other Selected International Decisions Confirming Customary Status of the Convention Rules VII. Selected Domestic Court Decisions Confirming Customary Status of the Convention Rules
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