At the Guardian, Pinker tagged a number of books to make you an optimist, including:
The ... remarkable decline of armed conflict is recounted in Joshua Goldstein’s Winning the War on War and several irreverent books by John Mueller, including The Remnants of War and the sarcastically titled collection A Dangerous World? The most surprising may be The Internationalists, in which Oona Hathaway and Scott Shapiro argue that the oft-ridiculed 1928 pact outlawing war deserves much of the credit.Read about the other entries on the list.
--Marshal Zeringue