This document discusses international trade policy and the development of the world trading system. It covers the various instruments governments use to influence trade flows, such as tariffs, subsidies, quotas, and antidumping policies. It also discusses arguments for and against government intervention in trade. The modern trading system is based on GATT and the WTO, which have sought to liberalize trade through agreements like the Uruguay Round. However, issues remain unresolved and the future of the WTO is uncertain. International managers must consider how trade barriers and policies could impact their firm's strategy.