This book is an introduction to international economics, intended for students who are taking their first course in the subject. The level of exposition requires as a background no more than a standard introductory course in the principles of economics. Those who have had intermediate micro and macro theory will find that background useful, but where the tools of intermediate theory are necessary in this book they are taught within the text. The primary purpose of this book is to present a clear, straightforward, and current account of the main topics in international economics. We have tried to keep the student?s perspective constantly in mind and to make the explanations both intuitively appealing and rigorous.