Secretary of State Colin Powell has resigned his post but will stay on until his replacement is named. Sources say U.S. Ambassador to the United Nations John Danforth and Bush’s national security adviser Condoleezza Rice are leading candidates for replacing the former four-star general.

Powell had the aura of a golden boy when he first took his post as Secretary of State. But after 9/11, Powell emerged as a lonely voice reaching out to other countries in a Bush administration ready to go it alone. While Powell publicly supported Bush, rumors boiled over that he bit his tongue while doing it.

Hear about Powell’s tenure as U.S. Secretary of State and a look ahead to his possible successors.

Guests:

Michael Hirsh, reports on international affairs for Newsweek magazine

David Ignatius, columnist for Washington Post

Steven Weisman, chief diplomatic correspondent at The New York Times

Howard Means, author of “Colin Powell: Soldier/Statesman”

Jack Beatty, On Point news analyst, senior editor for The Atlantic Monthly magazine.