On The DMZ, Matt and guest-host Michael discuss a possible Elizabeth Warren presidential run in 2016. Michael thinks that Warren’s outsider status and anti–Wall Street populism could appeal to the zeitgeist on both left and right. But what are the odds of Warren running, let alone being able to defeat Hillary Clinton? Moving to foreign affairs, Michael makes the case for nuclear negotiations with Iran. Can America and Iran put aside their problematic history? Why did France oppose the deal? Plus: Why does Washington Post columnist Richard Cohen still have a job?