1. “The WTO is sometimes described as a “free trade” institution, but that is not entirely accurate. The system does allow tariffs and, in limited circumstances, other forms of protection. More accurately, it is a system of rules dedicated to open, fair, and undistorted competition. The rules on non-discrimination – MFN and national treatment – are designed to secure fair conditions of trade.” – WTO Understanding the WTO: Principles of the Trading System Discuss with reference to the interpretation by WTO panels and the Appellate Body of the rules on non-discrimination.