In Today’s Observer

Jason Horowitz has an interview with Joe Biden that’s going to shift the debate among Democrats over America’s options in Iraq. Biden — one of the party’s most prominent voices on foreign policy — tells Horowitz that Hillary Clinton’s plan would be a disaster, that Barack Obama hasn’t offered anything of substance and that John Edwards doesn’t know what he’s talking about at all.

Biden, who’s running for president, also wonders why Hillary Clinton isn’t more popular.

Michael Calderone reports on Dean Baquet’s return to the Times.

Matt Schuerman writes about an apostle of congestion pricing.

Steve Kornacki explains why Chuck Hagel is the John McCain.

And Joe Conason thinks the Bush administration is heading for disaster with its Iran policy.

– Josh Benson