On the evening of September 11, 2002, with the Statue of Liberty shimmering in the background, television cameras captured President George W. Bush as he advocated the charge for war against Iraq. This carefully staged performance, writes Susan Brewer, was the culmination of a long tradition of sophisticated wartime propaganda in America. In Why America Fights, Brewer offers a fascinating history of how successive presidents have conducted what Donald Rumsfeld calls "perception management," from McKinley's war in the Philippines to Operation Iraqi Freedom. Her intriguing account ranges from...