This is a book on how American foreign-policy makers should wield carrots as well as sticks. But it turns out to be even more-a handy guide to the characteristic dilemmas of the post-Cold War era. Until now, hardly anyone has analyzed just how to use incentives in dealing with problem countries. Taking a comprehensive collection of cases that examine U.S. relations with China, Iraq, North Korea, South Africa, the former Soviet Union, and Vietnam-as well as Europe's effort to engage Iran-Haass and O'Sullivan have distilled some clear messages. Washington needs a clearer road map, sharper analysis of decision-making in target countries, more coordination with allies, and a better effort to manage the domestic politics that often confound policies of engagement. Although credible sticks must complement carrots, the contributors explain why the equation should usually work both ways. An interesting observation, buttressed by Ken Juster's Iraq case, is that a little engagement can actually be a prerequisite to successful coercion. When rallying a coalition, it helps if others can see you tried a bit of friendship first.