Among restrictions on imports, safeguard measures are particularly controversial in that they are invoked in the absence of any unfair trade practice. Safeguards interfere substantially with the normal stream of trade, and their improper application undermines the objectives of the WTO. Recent WTO cases have brought the attention of trade lawyers to the absence of comprehensive materials on this complex subject, and highlighted the need for a reliable guide to the WTO rules on safeguards. Dr. Y.S. Lee, perhaps the world s foremost authority on safeguard measures, has provided such a guide, here updated in its second edition.