¹⁴ For example, the North American Free Trade Agreement (Canada, Mexico, United States) (NAFTA, Preamble, XXXII ILM (1993), p. 289); the World Trade organisation (WTO) (paragraph I of the Preamble of the Marrakesh Agreement of 15 April 1994, establishing the World Trade Organisation speaks of the "optimal use of the world's resources in accordance with the objective of sustainable development" XXXIII ILM(1994), pp. 1143-1144); and the European Union (Art. 2 of the ECT).