“The costs of leaving Iraq,” says Joe Biden, “are debatable. The costs of staying are completely knowable. And they are getting higher and higher, and higher.” This is why I like Joe Biden.

Ezra Klein is a former Prospect writer and current editor-in-chief at Vox. His work has appeared in the LA Times, The Guardian, The Washington Monthly, The New Republic, Slate, and The Columbia Journalism Review. He’s been a commentator on MSNBC, CNN, NPR, and more.