The papers in this collection give an overview of the latest work in international trade theory. The contributors include many of the most innovative contemporary theorists, and they provide an unrivaled introduction to the latest developments in one of the most dynamic subfields of economics. Distinctive features of the book include a section on the role of historical and geographical considerations in international trade; an emphasis on dynamic aspects of trade; and an assessment of the work of Ronald Jones, in whose honor the book is published.