His appalling Times interview about the Iraq war.
Two and a half years ago, John McCain swallowed his pride and hitched his ambitions to two stars—George W. Bush and the war in Iraq. Both have since imploded. And so, as his campaign faces the purple dusk of twilight time, the man who might once have been an honorable president slips and slides on the stardust.
Fred Kaplan is Slate's "War Stories" columnist and author of the book, The Insurgents: David Petraeus and the Plot to Change the American Way of War. He can be reached at firstname.lastname@example.org. Follow him on Twitter.
Photograph of Sen. John McCain by Scott Olson/Getty Images.