IBRD: International Bank for Reconstruction and Development. See World Bank.

ICC Guidelines for International Investment: adopted in 1972 by the International Chamber of Commerce (ICC) to serve as a model for international agreements. They have been used in this way by the OECD and some other international organizations. A feature of the guidelines is that they combine the rights and obligations of states and firms in a single instrument.

ICITO: Interim Commission for the International Trade Organization. Established in 1948 to prepare the administrative arrangements for entry into force of the ITO. At the same time, it was agreed that ICITO would supply the secretariat services for GATT. As the ITO did not enter into force, ICITO's only reason for existence was the latter arrangement.

ICSID: International Centre for Settlement of Investment Disputes, located in Washington DC, chaired ex officio by the president of the World Bank. It was established by the Convention on the Settlement of Investment Disputes between States and Nationals of Other States which entered into force on 14 October 1966. ICSID provides facilities for conciliation and arbitration of disputes. It describes its main objective as the promotion of a climate of mutual confidence between states and foreign investors conducive to an increasing flow of resources to developing countries. It publishes the ICSID Review: Foreign Investment Law Journal which is a source of commentary and analysis of the legal treatment of foreign investment, including investment treaties.