"The most important political book of the year."--Gregg Easterbrook, author of The Progress Paradox Everyone knows: wars are getting worse, more civilians are dying, and peacemaking achieves nothing, right? Wrong. Despite all the bad-news headlines, peacekeeping is working. Fewer wars are starting, more are ending, and those that remain are smaller and more localized. But peace doesn't just happen; it needs to be put into effect. Moreover, understanding...