Discuss the principle of sustainable development and environmental protection within the WTO trading system. In your answer also cite various authorities and also refer to applicable case law including: 1. United States - Import Prohibition of Certain Shrimp and Shrimp Products WT/DS58/R (15 May 1998)

2. United States - Import Prohibition of Certain Shrimp and Shrimp Products WT/DS58/AB/R (12 October 1998)

3. United States - Import Prohibition of Certain Shrimp and Shrimp Products, Recourse to Article 21.5 WT/DS58RW (15 June 2001).

4. United States - Import Prohibition of Certain Shrimp and Shrimp Products, Recourse to Article 21.5 WT/DS58/AB/RW ("Article 21.5 Appeal") The Appellate Body on (22 October 2001).

In conclusion, also provide your own opinion on whether the use of the GATT XX(g) exception to limit free trade in order to encourage sustainable development and protect the environment does not promote disguised restrictions against international trade.