The International Centre for Settlement of Investment Disputes (ICSID or the Centre) is established by the Convention on the Settlement of Investment Disputes between States and Nationals of Other States (the ICSID Convention or the Convention). The Convention was formulated by the Executive Directors of the International Bank for Reconstruction and Development (the World Bank). On March 18, 1965, the Executive Directors submitted the Convention, with an accompanying Report, to member governments of the World Bank for their consideration of the Convention with a view to its signature and ratification. The Convention entered into force on October 14, 1966, when it had been ratified by 20 countries. As at April 10, 2006, 143 countries have ratified the Convention to become Contracting States.

In accordance with the provisions of the Convention, ICSID provides facilities for conciliation and arbitration of investment disputes between Contracting States and nationals of other Contracting States. The provisions of the ICSID Convention are complemented by Regulations and Rules adopted by the Administrative Council of the Centre pursuant to Article 6(1)(a)–(c) of the Convention (the ICSID Regulations and Rules).

The ICSID Regulations and Rules comprise Administrative and Financial Regulations; Rules of Procedure for the Institution of Conciliation and Arbitration Proceedings (Institution Rules); Rules of Procedure for Conciliation Proceedings (Conciliation Rules); and Rules of Procedure for Arbitration Proceedings (Arbitration Rules). The latest amendments of the ICSID Regulations and Rules adopted by the Administrative Council of the Centre came into effect on April 10, 2006.

Reprinted in this booklet are the ICSID Convention, the Report of the Executive Directors of the World Bank on the Convention, and the ICSID Regulations and Rules as amended effective April 10, 2006.

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