The world trade organization -- Sources of law -- WTO law and domestic law -- Dispute settlement -- Enforcement of WTO obligations : remedies and compliance -- The most-favored-nation principle -- The national treatment principle -- Tariffs, quotas, and other barriers to market access -- Agriculture -- Subsidies and countervailing duties -- Antidumping -- Safeguards -- Technical barriers to trade : TBT and SPS -- Preferential trade agreements in the WTO -- Export controls and national security -- Trade in services -- Intellectual property -- Government procurement -- Developing countries -- Environmental protection and trade -- Trade and investment -- Competition policy and trade -- Future challenges.