DANIEL DREZNER: “I’m pretty sure supreme leaders in Iran don’t change political tack because of mass protests — it undercuts their claim to be, you know, supreme leaders. . . . I’m not sure that Ahmadinejad and Khamenei will be out of power soon. What I am pretty sure of is that the only way they’re going to stay in power from hereon in is through a display of brute force on a Tiananmen-like scale.”