Bruce Bartlett , the author of '' Impostor , '' a scorching deconstruction of the Bush administration 's economic policies , writes as an ardent Reaganite ; and George Packer , the author of one of the most devastating accounts of Mr. Bush 's prosecution of the war in Iraq , writes as an '' ambivalently prowar liberal '' who had wanted to see Saddam Hussein , '' a homicidal dictator removed from power before he committed mass murder again . ''