The aim of this course is to provide an introduction to modern work on international trade theory and policy. We introduce students to the main theoretical and empirical concepts in international trade, ranging from Ricardian comparative advantage to modern theories of intra-industry trade. We will analyse the main issues in trade policy and the basic features of international trading regimes. Some of the questions that will be addressed are: Why do countries trade? What are the gains from trade? How does trade influence income distribution? What determines the pattern of trade? What are the implications of imposing tariffs, quotas or other trade policies?